A bus travelling 30.0 km/h east has a constant increase in speed of 1.5 m/s. What is its velocity 6.8s later

Answers

Answer 1

The final velocity of the bus  is 9.83 m/s

The given parameters;

initial velocity of the bus, = 30 km/h

constant increase in speed, = 1.5 m/s

time of motion, t = 6.8 s

The initial velocity of the bus in m/s;

[tex]v = 30 \frac{km}{h} \times \frac{1000 \ m}{1 \ km} \times \frac{1 \ h}{3600 \ s} = 8.33 \ m/s[/tex]

The acceleration of the bus;

[tex]a = \frac{\Delta v}{\Delta t} = \frac{1.5 \ m/s}{6.8 \ s } = 0.22 \ m/s^2[/tex]

The final velocity of the bus at the given time of motion;

[tex]v= u + at\\\\v = 8.33 + (0.22 \times 6.8)\\\\v = 9.83 \ m/s[/tex]

Thus, the final velocity of the bus  is 9.83 m/s

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Related Questions


Shine the flashlight on the liquid crystal sheet. Did you observe evidence that light carries energy?

Answers

Answer:

no i did not observe anything

Explanation:

Question 8 of 10
When you see your reflection in a flat (plane) mirror, what type of image are
you seeing?
A. Smaller
B. Virtual
C. Larger
D. Real

Answers

Answer:

virtual

Explanation:

because the light rays do not meet at the image position

the other options are definitely wrong because

characteristics of a plane mirror images are that,

it is the same size as the object

it is upright

Answer:

B - Virtual

Explanation:

What are the important points to remember while constructing an electric
circuit?

Answers

Explanation:

There are four fundamental elements of an electrical circuit, irrespective of where or even how positive or negative it is: a power source, a resistor, an electric generator or unit, and at most one regulator or switch. 

Which statement best compares a scientific theory and an opinion?
O A. Neither an opinion nor a scientific theory can ever be changed.
O B. An opinion is supported by evidence, while a scientific theory often is not supported by evidence.
OC. A scientific theory is supported by evidence, while an opinion often is not supported by evidence.
OD A scientific theory can never be changed, while an opinion can change in many ways.
Im

Answers

Answer: c opinion is something ppl just suggest but a theory needs proof before it is confirmed

(Conservation of Momentum)
Consider a 2,000 kg car traveling 10 m/s toward another car.After the two cars collide, they couple together and move along at 6 m/s. What is the mass of the second car?
Can someone please solve and explain,I don’t understand:/

Answers

Answer:

I haven't learnt physics at all yet but I'll try.

After the two cars collide, they move at 6 m/s.

This tells us that the 2nd car which collided with the first car which is 2000 kg is much heavier than the 1st one, if the second one was lighter, the two cars coupled together speed would be much more than just 6 m/s.

Refer to explanation for working.

Explanation:

Now find out how much g or kg is the 2nd car more than the 1st.

2000 ÷ 10 = 200 (I don't really know how to explain this part)

10 - 6 = 4 (Difference for 1st car average speed per second and the coupled cars average speed per second)

200 x 4 = 800

2000 + 800 = 2800 kg

(Final answer)

Which part of the following graph shows the object going at the fastest speed?
Distance
5
4-
in km
2-
1-
A А
0
6 5 10 15 20 25 30 35 40 45
Time in minutes
O Ato B
B to C
C to D
A to B and C to D are going equal speeds

Answers

Answer:

more point plzzzzz... eeeeeeeee

A to B in the graph shows the object going at the fastest speed.

In a distance-time graph, the gradient of the line is equal to the speed of the object. The greater the gradient (and the steeper the line) the faster the object is moving.

What is speed ?

"The rate of change of position of an object in any direction. Speed is measured as the ratio of distance to the time in which the distance was covered. Speed is a scalar quantity as it has only direction and no magnitude."

Know more about speed here

https://brainly.com/question/7359669?

#SPJ2

A man pushed the box with a force of 20 N. He doubled his force to 40 N. The box did not
change. Which option best describes the acceleration of the box after the force was doubled?

a) Acceleration is 2x the original acceleration

b) Acceleration is 4x the original acceleration

c) Acceleration is 1/2x the original acceleration

d) Acceleration is 1/4x the original acceleration

Answers

Answer:

A

Explanation:

if the man doubles his force to 40 and the box was yet to move that means acceleration also doubled so your answer would be A

Enter a range of values for x.
a
a
3x-90 930
26
27

Answers

Answer:

32

[tex]3x - 9 + 93 = 180 \\ 3x + 84 = 180 \\ 3x = 180 - 84 \\ = 96 \\ x = \frac{96}{3} \\ x = 32[/tex]

Answer:

the answer is 3 and 34 i just took the quiz

this is the measured value (always positive) from one point to another

Answers

Answer:

Distance.

Explanation:

Motion can be defined as a change in the location (position) of a physical object or body with respect to a reference point i.e the amount of distance covered by the physical object.

This ultimately implies that, motion would occur as a result of a change in location (position) of an object with respect to a reference point or frame of reference i.e where it was standing before the effect of an external force.

Mathematically, the motion of an object is described in terms of acceleration, time, distance, speed, velocity, displacement, position, etc.

Hence, distance is the measured value (always positive) from one point to another.

Mathematically, distance is given by the formula;

Distance = speed * time

Also, the S.I unit for measuring the distance covered by a physical object is meters.

PLS, THIS IS URGENT!! Read the following passage that explains the image you examined at the beginning of the lesson in order to answer the following question. Why is it important to have a range of tools that can measure all parts of the electromagnetic spectrum?
I would give the BRAINLIEST for the best answers!!!

Answers

Answer:

It is important to have a range of tools that can measure all parts of the electromagnetic spectrum because electromagnetic spectrum have different radiations such as infrared, visible light, ultraviolet, radio waves, microwaves, X-rays and gamma rays. Each of these radiation requires different instrument for their measurement. So that's why a range of tools are needed to measure electromagnetic spectrum.

A weight of 4.0 N is used to extend a spring. The extension of the spring is 0.06 m. (i) Calculate the spring constant, k, of the spring.

(ii) State what measurements should be made to determine the extension of the spring produced by the 4.0 N weight.

Answers

Answer:

See explanation

Explanation:

Hookes law states that; the displacement due to a stretching force is directly proportional to the magnitude of the deforming force.

F = ke

F = deforming force

k = force constant

e = extention

k = F/e

k = 4N/0.06 m= 66.67 Nm^-1

To determine the extension of the spring produced by the 4.0 N weight

1) We measure the original length of the spring

2) We measure the length after hanging the 4 N mass

3) Subtract the new length from the original length to determine the extention.

Please hurry please

What is the height of the counter where a 4 kg fruit basket sits that has 30 J of gravitational potential energy? h= GPE/am

Answers

Answer:

0.765m

Explanation:

gravitational potential energy GPE = mass * acceleration due to gravity * height

Given

GPE = 30Joules

Mass m = 4kg

acceleration = 9.8m/s²

Required

Height h

From the formula

h = GPE/mg

h = 30/4(9.8)

h = 30/39.2

h = 0.765m\

Hence the height of the counter is 0.765m

How much power is developed in a car that can pull a 5000 N at a constant speed
of 20 m/s?

Answers

Answer:

YAYA MAN

Explanation:

PLS ANSWER FAST WILL GIVE BRAINLEST !!!


Calculate the missing variables using the necessary formula and rules using "FORCE"


How much force is needed to accelerate a 2000 kg car by 3 m/ s2

Answers

Answer:

F = 6,000 N

Explanation:

F = m × a

F = 2,000 × 3

F = 6,000 kg m/s²

F = 6,000 N

A shopping cart with two nice kids, rolls off a horizontal roof ledge that is 50
meters high. The cart and nice kids land 30 meters from the base of the ledge.
How fast was the cart rolling when it left the ledge?

Answers

Answer:

9.39 m/s

Explanation:

Using the y-direction, we can solve for the time t it takes for the cart to reach the ground.

Assume the up direction is positive and the down direction is negative.

v₀ = 0 m/sa = -9.8 m/s² Δy = -50 m t = ?

Find the constant acceleration equation that contains these four variables.

Δy = v₀t + 1/2at²  

Substitute known values into this equation.

-50 = (0)t + 1/2(-9.8)t²

Multiply and simplify.

-50 = -4.9t²

Divide both sides of the equation by -4.9.

10.20408163 = t²

Square root both sides of the equation.

t = 3.194382825

Now we can use this time t and solve for v₀ in the x-direction. Time is most often our link between vertical and horizontal components of projectile motion.  

List out known variables in the x-direction.

v₀ = ?t = 3.194382825 s a = 0 m/s²Δx = 30 m

Find the constant acceleration equation that contains these four variables.

Δx = v₀t + 1/2at²  

Substitute known values into the equation.

30 = (v₀ · 3.194382825) + 1/2(0)(3.194382825)²

Multiply and simplify.

30 = v₀ · 3.194382825

Divide both sides of the equation by 3.194382825.

v₀ = 9.391485505

The cart was rolling at a velocity of 9.39 m/s (initial velocity) when it left the ledge.

Answer:

9.39 m/s

Explanation:

Using the y-direction, we can solve for the time t it takes for the cart to reach the ground.

Assume the up direction is positive and the down direction is negative.

v₀ = 0 m/s

a = -9.8 m/s²

Δy = -50 m

t = ?

Find the constant acceleration equation that contains these four variables.

Δy = v₀t + 1/2at²  

Substitute known values into this equation.

-50 = (0)t + 1/2(-9.8)t²

Multiply and simplify.

-50 = -4.9t²

Divide both sides of the equation by -4.9.

10.20408163 = t²

Square root both sides of the equation.

t = 3.194382825

Now we can use this time t and solve for v₀ in the x-direction. Time is most often our link between vertical and horizontal components of projectile motion.  

List out known variables in the x-direction.

v₀ = ?

t = 3.194382825 s

a = 0 m/s²

Δx = 30 m

Find the constant acceleration equation that contains these four variables.

Δx = v₀t + 1/2at²  

Substitute known values into the equation.

30 = (v₀ · 3.194382825) + 1/2(0)(3.194382825)²

Multiply and simplify.

30 = v₀ · 3.194382825

Divide both sides of the equation by 3.194382825.

v₀ = 9.391485505

The cart was rolling at a velocity of 9.39 m/s (initial velocity) when it left the ledge.

Which of the following is NOT a function of the skeletal system?

A. Support your body
B. Give shape to your body
C. Bring oxygen to your body
D. Protect your body​

Answers

D
Hope this helps
And
I think the answer is D

Which compound contains only covalent bonds CH3OH Ca(OH)2 Ba(OH)2 NaOH

Answers

Answer: CH3OH

Explanation:

A bicycle is 10 m from a wall traveling at a rate of 4 m/s. How far from the wall will it be if it accelerates at a rate of 12 (m/s)/s for 8 seconds

Answers

The bicycle is a distance x away from the wall at time t according to

x = 10 m + (4 m/s) t + 1/2 (12 m/s²) t ²

so that after t = 8 s, it will be

x = 10 m + (4 m/s) (8 s) + 1/2 (12 m/s²) (8 s)² = 426 m

away from the wall.

Suppose you bake a potato in a toaster oven that uses 1.2 kW. The oven is turned on for 25 minutes. How many kilowatt hours did it use?

Answers

Answer:

0.3kilowatts hours

Explanation:

If you bake a potato in a toaster oven that uses 1.2 kW and oven turned on for 25minutes, to get the amount in kilowatt hour, we will need to convert minutes to hour first

60minutes = 1hr

25minutes = x

60x = 25

x = 25/60 hr

x =

Multiply the time in hr with the power

Amount of kWhr used = 1.2 * 25/60

Amount of kWhr used = 30/60

Amount of kWhr used  = 0.3kilowatts hours

Hence it used 0.3kilowatts hours

Why does the time for 20 complete oscillations need to be taken in the pendulum oscillation experiment?​

Answers

Answer:

In order to minimize the uncertainty in the period, we measured the time for the pendulum to make 20 oscillations, and divided that time by 20

Explanation:

If 59.1 g of pure metal uses 890.9 j of energy to heat it from 26.1 c to 59.6 c, identify the metal

Answers

Answer: The metal is iron.

Explanation:

We have 59.1 grams of a given metal.

We need 890.9 joules of energy to heat the metal from 26.1°C to 59.6°C

First, we need to see the net increase in temperature, which is equal to the difference between the final temperature and the initial temperature.

ΔT = 59.6°C - 26.1°C = 33.5°C

Now we can find the specific heat, which is calculated as:

c = Ε/(ΔT*m)

Where:

E = energy given to the material = 890.9 J

m = mass of the material = 59.1 gr

ΔT = change in temperature = 33.5°C

Replacing these in the above equation we get:

c = 890.9 J/(33.5°C*59.1 gr) = 0.45 J/(gr*°C)

Now we need to look at a table of specific heats and see which metal has this specific heat.

We can see that iron is the best match, so we can assume that the metal is iron.

A WAY TO ACHIVE A STABLE CONFIGURATION IS BY ELECTRON TRANSFER. WHICH TYPE OF BOND IS IT?

Answers

Answer:

Explanation:

Covalent bonds share electrons

If too much energy is given to an electron that is above the threshold
frequency what happens to the extra energy?

Answers

Answer:

The electron gives up It's extra energy in a form called "photon light" and falls back down to its normal energy level

Explanation:

A man pushes against a tree with a force of 10 newtons (N). The tree does not move. What is the amount of force exerted
by the tree on the man?
ON
BSN
10 N
20 N

Answers

Answer:

10 N

Explanation:

Given that,

A man pushes against a tree with a force of 10 newtons.

We need to find the amount of force exerted by the tree on the man.

The force exerted by the tree on the man will be equal to the force that the man exert on the tree as per Newton's third law of motion.

It means the tree exert 10 N force on the man. Hence, the correct option is (c) i.e. 10 N.

how can we prove an object is moving? a) Compare it to another object. b) Measure it's change in position. c) Identify it's location. d) There is no way to measure motion

Answers

Answer:

B

Explanation:

The object won't stay in the same place if its moving

Explanation:

B) Measure it's change in position.

According to the article, why might acting happy actually make one happy?

Answers

Answer: mirror neurons are the reason people usually reflect the behavior of those around them and have been linked to the ability to empathize. People are attracted to happy people because it seems to boost our mood.

Explanation:

Answer:

Some psychologists think that you can trick your brain into feeling happy by acting happy. Acting happy might actually make one happy by mirror neurons. This is the reason people usually reflect the behavior of those around them and have been linked to the ability to empathize. People are attracted to happy people because it seems to boost our mood. The three components of emotion are cognitive, physiological, and behavioral. There is actually some scientific evidence to suggest that smiling, even when you are not feeling happy, can make you happy. This idea is called the facial feedback hypothesis. Happiness, and smiling, can also be contagious and make others around them want to smile. People often mimic the facial expressions of others.

Explanation:

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Rhyolite forms as lava cools very quickly, forming holes.
Sometimes gems can form within the holes. The image
shows fire opal within rhyolite.
Which type of rock is rhyolite?
A. Intrusive igneous
B. Extrusive igneous
C. Metamorphic
D. Sedimentary
PREVIOUS

Answers

Answer:

B. Extrusive igneous

Explanation:

Its B

Someone is traveling from Houston, TX to Dallas, TX. It takes 4 hours to make the 224mile trip. What is his velocity?

Answers

224/4 and you get 56mph

3. If the net work done on an object is negative, then the object's kinetic energy
a. decreases.
b. remains the same.
c. increases.
d. is zero.

Answers

Answer:

I think the answer is B I hope this helps also Im sorry If I'm wrong

Do different types of electromagnetic waves travel at different speeds?

Answers

No.

Radio, TV, microwave, heat, red, yellow, blue, tanning rays, X-rays, and gamma rays all travel at the same speed.  It's called the "speed of light".

(As long as they're all traveling through the same stuff.)

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Write a program in your favorite language (e.g., C, Java, C , etc.) to convert max. 32 bit numbers from binary to decimal. The user should type in an unsigned binary number. The program should print the decimal equivalent. You should write a program from scratch that performs the conversion, please do not use built in functions. Please provide a screenshot of your program running on these values: 111011012 110000110011110101110101011101012 Please also include your source code together with your answers to assignment questions. 5.The coordinates of A are (4,5) and the coordinatesof B are (10, y). If the midpoint of AB is (7, -2),find the value of y. 9. Examine the challenges and future perspective of human resourcedevelopment in the context of Nepal. University Car Wash built a deluxe car wash across the street from campus. The new machines cost $249,000 including installation. The company estimates that the equipment will have a residual value of $25,500. University Car Wash also estimates it will use the machine for six years or about 12,500 total hours. Actual use per year was as follows:Year Hours Used1. 2,9002. 1,8003. 1,9004. 2,1005. 1,9006. 1,900Required: 1. Prepare a depreciation schedule for six years using the straight-line method. 2. Prepare a depreciation schedule for six years using double declining balance method.3. Prepare a depreciation schedule for six years using activity cost method. If g(x) = x^2-5, find the value(s) of x so that:a. g(x)= 20b. g(x) = 6 How would I get the answer to this problem. Zack has an old car. He wants to sell it for 60% off the current price. The market price is $500. How much money would he receive in exchange for the car if he were able to sell it at that rate? What if he wanted to sell it for 25% more than the market price? Is there a better way of saying, " On my first day in school, I didnt know my way around and sam helped me out " why did the great war become a world war Write each fraction or mixed number as a decimal. Use bar notation if the decimal is a repeating decimal. 2 5/8 How did Africas environment influence the location of early human settlements?A. Humans established the first settlements in the Kalahari Desert.B. Humans tended to settle in the mountainous Ethiopian Highlands.C. Humans established the first settlements in the driest areas of the Sahara Desert.D. Humans tended to settle along bodies of water, including the Nile and Niger rivers. summarize the main points of Jackson Kuhl's "Innovations That Changed Building Design."Anyone please help please To keep her pet groundhog Marley happy, Gwen built a rectangular pen for Marley with an area of 242 square feet. She only had 66 feet of fencing to use, and wanted the length to be twice as long as the width. What are the dimensions of the pen? In what way were the Jamestown and the Plymouth colonies similar?A. Both succeeded by developing cash-intensive crops.B. Both struggled with starvation and other harsh conditions.C. Both were driven by economic success over religious freedom.D. Both had roots in the Protestant Reformation under King James I. List 4 concepts you learned in this unit about waves and explain how each one applies to your life (4 points) Ap3x... Please can you put the right answer.. One of the most famous prehistoric monuments in Europe is the mysterious site known as Stonehenge. It is located in southwestern England on Salisbury Plain, and its earliest structures dates back approximately 4,500 years to the Neolithic Age. A variety of researchers over the years has determined the evolutionary sequence of the various structures from geological and archaeological evidence. In addition, more recent research in the areas surrounding Stonehenge have revealed evidence of a Neolithic village and several gravesites, which have yielded useful information. In 2002, the tomb and remains of a man dubbed the Amesbury Archer was unearthed. Chemical analyses of his teeth have demonstrated that he grew up somewhere in the Alps and migrated to southwestern Britain. The Archer was buried with artifacts, including gold hair ornaments and various tools that indicates he was wealthy. The idea of his migrating so far has intrigued those who are exploring in areas around Stonehenge.Which option below would be an acceptable revision of the underlined selection?a. have determinedb. determinec. is determiningd. No revision is necessary helpppp plssss :))))))(((( help I'm doing an assignment and im stuck What is an investigation?an attempt to prioritize and analyze risksan attempt to improve the quality of somethingan attempt to collect and analyze information about an incidentan attempt to reduce the costs of risks