Answer:
The launch speed is approximately 13.28 m/s
Explanation:
The given parameters are;
The distance from the base of the cliff the projectile lands = 26.3 meters
The height of the cliff, s = 19.3 meters
The time it takes the projectile to land = 5 seconds
The direction of the projectile = Horizontal
The vertical motion of the projectile is given as follows;
19.3 = 1/2 × g × t² = 1/2 × 9.81 × t²
t = √(2 × 19.3/9.81) ≈ 1.98 seconds
Therefore, the time it takes to land ≈ 1.98 seconds
The launch (horizontal) speed = (The horizontal distance)/(Horizontal time)
The launch (horizontal) speed = 26.3/1.98 ≈ 13.28 m/s.
The launch speed of a horizontally launched projectile is equal to 13.22 m/s.
Given the following data:
Time = 5 seconds.Height = 19.3 metersHorizontal distance = 26.3 meters.To determine the launch speed of a horizontally launched projectile:
First of all, we would calculate the time it took the projectile to land at the base of the cliff by using the maximum height formula:
[tex]H = \frac{1}{2} gt^2[/tex]
Making t the subject of formula, we have:
[tex]t=\sqrt{\frac{2H}{g} }[/tex]
Substituting the given parameters into the formula, we have;
[tex]t=\sqrt{\frac{2\times 19.3}{9.8} }\\\\t=\sqrt{\frac{38.6}{9.8} }\\\\t=\sqrt{3.94}[/tex]
Time, t = 1.99 seconds
Next, we would determine the launch speed by using the formula:
[tex]Horizontal\;speed = \frac{horizontal\;distance}{time} \\\\Horizontal\;speed = \frac{26.3}{1.99}[/tex]
Horizontal speed = 13.22 m/s
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Wooden handles on knives do not require maintenance.
TRUE
FALSE
Answer: false
Explanation:
You have to make sure it doesn’t stay wet
Fun fact
An apple, potato, and onion all taste the same if you eat them with your nose plugged
Answer:
Fun fact
An apple, potato, and onion all taste the same if you eat them with your nose plugged
Explanation: yes
Answer the following questions in the essay box below.Did the different sized suspended balloons balance?if they did not, which balloon tipped the scale down?Did your results validate the hypothesis above?Give an explanation for your results, including a discussion of how the data collected either validated, or disproved the hypothesis.
Answer:
what is it about
Explanation:
Answer:
Note: These answers are based off of sense and educational quessing, as I cannot do the experiment.
Question 1:
The balloons did not balance.
Question 2:
The bigger balloon tipped the scale down.
Question 3:
Yes, it validated that gas does has mass, as the bigger balloon weighed down the scale.
Question 4:
N/A
PLS HELP ASAP!! How many calories are required to melt a 10g ice cube which is at 0° C?
A. 10 cal
B. 800 cal
C. 80 cal
D. 540 cal
Answer:
800 calories are required to melt a 10g ice cube which is at 0 degrees C.
Explanation:
hope this helps, have an amazing day
If the force acting on a cart doubles, what happens to the carts acceleration?
Answer:
If the force on a cart doubles, the acceleration of the cart doubles.
Explanation:
For this problem, we need to consider the following equation:
Force = Mass x Acceleration
We can reasonably assume that the cart will have constant mass in the given force system. With this assumption we can say the following relationship:
Force is directly proportional to Acceleration within the system.
Given that our force on the cart is doubled, then our acceleration of the cart must also be doubled. You can mathematically express this as follows:
F = MA
2F = M * 2A
Hence, if force doubles, the acceleration doubles.
Cheers.
At what time were the racers at the same position?
O 15
O 3s
O 5s
0 4s
Which is not a force?
O momentum
O friction
O pull
O weight
Answer:
weight
Explanation:
the reason is because I am invteble
You go on American Eagle at Six Flags. The highest drop is 44.8 meters tall. It takes you 1.49 seconds to make that drop. How fast did you go?
Given parameters:
Height = 44.8m
Time to drop = 1.49s
Unknown:
Speed of drop = ?
Solution:
The is a speed problem.
Speed is one of the physical quantities. It is designated a scalar because it has magnitude but no directional orientation.
Speed is the distance divided by time.
In this problem distance is the same as the height of the drop.
Mathematically;
Speed = [tex]\frac{distance}{time}[/tex]
So, input the parameters and solve;
Speed = [tex]\frac{44.8}{1.49}[/tex] = 30.1m/s
The drop recorded a speed of 30.1m/s
A car can complete a 800 m long lap in 10 s. What is the speed of the car
Answer:
80 mph
Explanation:
can you plzzzzz make me brainliest
Answer:
178.955mph or 179mph
Explanation:
✨calculator✨
How are extrusive rocks formed?
A. Magma gets trapped inside Earth and cools to rock.
B. Volcanoes apply force to solid rocks and eject them
C. Magma gets forced to Earth’s surface and cools to rock.
D. Volcanoes trap lava inside Earth, where it cools to rock.
Answer:
A
Explanation:
Answer: C
Explanation: Because if magma wasn't to be forced on earth's surface, the magma would come on earth and burn earth down.
If I have 10 m 20 N how much work do I have
Answer:
200 joule
Explanation:
force= 20N
distance=10m
work= ?
we know,
work= force×distance
=20N×10m
=200Nm or joule.
When the Northern hemisphere is tilted towards the sun, it is ___ in the northern hemisphere and ___ in the southern hemisphere
Summer in the northern
Winter in the southern
A 25 N force is applied to a 1.4 kg mass on level ground. If a 5 N frictional force is present between the surface and the object, what is the magnitude of the acceleration of this object?
Given parameters:
Force applied to the mass = 25N
Mass of the body = 1.4kg
Frictional force = 5N
Unknown:
Acceleration of the object = ?
Solution:
The net force on the object;
Fapplied - Frictional force = net force (m x a)
m is the mass of the body
a is the acceleration
Input the parameters and solve;
25 - 5 = 1.4 x a
1.4a = 20
a = [tex]\frac{20}{1.4}[/tex] = 14.3m/s²
The magnitude of the acceleration of the object is 14.3m/s²
1. If a distance-time graph contains the point (4, 15), what does that tell you about the runner?
Answer:
The answer is that the runner ran 4,15
Explanation:
The runner ran for 4 seconds and in 4 seconds he ran 15 yards or meters or feet
a student drops a tennis ball from rest. the ball falls 13m to the ground.find the final speed of the ball,just before it reaches the ground
[tex] ({v})^{2} - ({v(0)})^{2} = 2 \times a \times ∆x[/tex]
[tex]v = the \: \: speed \: \: before \: \: reaching \: \: ground \\ [/tex]
[tex]v(0) = the \: \: speed \: \: in \: \: the \: \: rest \: \: which \: \: is \: \: zero \\ [/tex]
[tex]a = Acceleration \: = \: Gravity \: \: acceleration = 10 \\ [/tex]
[tex]∆x = covered \: \: distance[/tex]
_________________________________
[tex] {v}^{2} - ({0})^{2} = 2 \times 10 \times 13 [/tex]
[tex] {v}^{2} = 2 \times 2 \times 5 \times 13 [/tex]
[tex]v = \sqrt{ {2}^{2} \times 65 } [/tex]
[tex]v = 2 \sqrt{65} \: \: \frac{m}{s} [/tex]
Done.....♥️♥️♥️♥️♥️
what will happen to products when we increase the amount of
reactants.
Answer:
Therefore, an increase in the concentration of a reactant will lead to a decrease in the amounts of all reactants and an increase in the amounts of all products.
Explanation:
Roxy is driving down East Capitol Street. She drives 1380 meters in 45 seconds. Assuming she does not speedup or slow down, what is her speed in meters per second? * Your answer
Answer:
30.66667
Explanation:
should be the answer if the calculator is correct
How RLC circuit is used?
Answer:
Explanation:i s an oscillating circuit consisting of a resistor, capacitor, and inductor connected in series. ... The voltage in the capacitor eventually causes the current flow to stop and then flow in the opposite direction. The result is an oscillation, or resonance.
1. In boxing, fighters wear padded gloves to protect their hands. Which statement explains why a fighter’s hands need protection?
A. There is an equal and opposite velocity impact the hand.
B. There is an equal and opposite acceleration impact the hand.
C. There is an equal and opposite momentum impacting the hand.
D. There is an equal and opposite force impacting the hand.
2. Two balls collide. Under which circumstances will they exert equal and opposite forces on each other?
A. If the sustem is closed
B. in all situations
C. If both are moving at the same speed when they collide
D. if they have the same mass
3. In a closed system, how does an increase in mass change the velocity of an impacted object?
A. Velocity decreases to conserve momentum.
B. Velocity may increase or decrease depending on acceleration.
C. Velocity may increase or decrease depending on force.
D. Velocity increases to conserve momentum.
4. Which of the following provides the correct equation for calculating the momentum of an object?
A. p= mv
B. m= DV
C. F= ma
D. m= vp
5. An object with a mass of 50 kg is moving at a velocity of 2 m/s. What is the momentum of the object?
A. 2 kg*m/s
B. 0.04 kg*m/s
C. 100 kg*m/s
D. 25 kg*m/s
6. A large train car moving along a horizontal track rolls into a smaller stationary train car, causing the cars to attach. Which statement best describes the motion of the cars after the connection?
A. The train cars move in the opposite directions from each other.
B. The train cars move together in the opposite direction the large car was moving.
C. The train cars move together in the direction the large car was moving.
D. The train cars both stay stationary.
7. Which equation correctly represents conservation of momentum for two colliding objects?
A. m1a1+m2a2=0
B. m1v1-m2v2=0
C. m1a1-m2a2=0
D. m1v1+m2v2=0
8. How can the sum of two vectors be found?
A. by drawing the vectors perpendicular to each other
B. by adding the numbers representing the vectors' magnitudes
C. by subtracting the numbers of the vectors' magnitudes
D. by drawing the vectors one right after the other
9. How could a closed system be changed without changing the net force on that system?
A. decrese the acceleration only
B. increase the mass and decrease the acceleration by the same numeric values
C. decrease the acceleration and decrease the mass by the same numeric values
D. increase the mass only
10. Which phrase best describes acceleration?
A. the produce of mass and velocity
B. the change in position over time
C. the product of force and distance traveled
D. the change in velocity over time
11. A ball rolls down a hill at constant velocity. Which of the following conditions must be true?
A. The ball will accelerate as gravity pulls it down the hill.
B. The ball has no net force acting on it.
C. There are no forces acting on the ball.
D. The momentum of the ball increases over time.
12. In an experiment, objects 1 and 2 with masses m1 and m2, respectively, collide with each other. The objects have initial velocities v1i and v2i and final velocities v1f and v2f, respectively. Which result would prove conservation of momentum?
A. m1v1i+m2v2i=m1v1f+m2v2f
B. m1v1i+m1v1f=m2v2i+m2v2f
C. m1v1i+m2v2i+m1v1f+m2v2f>0
D. m1v1i+m2v2i+m1v1f+m2v2f=0
Answer:
1.) D. There is an equal and opposite force impacting the hand
2.) B. In all situations
3.) A. Velocity decreases to conserve momentum
4.) A. p=mv
5.) C. 100 kg*m/s
6.) C. The train cars move together in the direction the large car was moving
7.) D. m1v1+m2v2=0
8.) D. By drawing the vectors one right after the other
9.) B. Increase the mass and decrease the acceleration by the same numeric values
10.) D. The change in velocity over time
11.) B. The ball has no net force acting on it
12.) A. m1v1i+m2v2i=m1v1f+m2v2f
Explanation:
Did the practice
(1) The fighters wear padded gloves to protect their hands because there is an equal and opposite force impacting the hand.
(2) The two balls when collide in a closed system will exert equal and opposite force.
(3) When the mass of the object increases, the velocity of the object will decrease to conserve momentum.
(4) The equation for calculating the momentum of an object is P = mv
(5) The momentum of the ball is 100 kg.m/s
(6) The train cars move together in the direction the large car was moving.
(7) The conservation of momentum of two objects is [tex]m_1v_1 - m_2v_2= 0[/tex]
(8) The sum of two vectors can be found by drawing the vectors perpendicular to each other.
(9) A closed system can be changed without changing the net force on the system by increase the mass and decrease the acceleration by the same numeric values.
(10) Acceleration is defined as the change in velocity over time.
(11) As ball rolls down at constant velocity, the ball has no net force acting on it.
(12) The conservation of momentum of the object is [tex]m_1v_1_i + m_2v_2_i = m_1v_1_f + m_2v_2_f[/tex]
(1)
According to Newton's third law of motion, action and reaction are equal and opposite.
The fighters wear padded gloves to protect their hands because there is an equal and opposite force impacting the hand.
(2)
Based on the principles of conservation of linear momentum, the two balls when collide in a closed system will exert equal and opposite force.
(3)
The principles of conservation of linear momentum is written as;
[tex]m_1u_1 + m_2u_2 = m_1v_1 + m_2v_2[/tex]
when the mass of the object increases, the velocity of the object will decrease to conserve momentum.
(4)
The equation for calculating the momentum of an object is written as;
P = mv
(5)
The momentum of the ball is calculated as follows;
P = mv
P = 50 x 2
P = 100 kg.m/s
(6)
For inelastic collision, the collided two objects move in the same direction after collision usually in the direction of heavier object.
The train cars move together in the direction the large car was moving.
(7)
The conservation of momentum of two objects is written as;
[tex]m_1v_1 = m_2v_2\\\\m_1v_1 - m_2v_2 = 0[/tex]
(8)
The sum of two vectors can be found by drawing the vectors perpendicular to each other.
(9)
A closed system can be changed without changing the net force on the system by increase the mass and decrease the acceleration by the same numeric values.
(10)
Acceleration is defined as the change in velocity over time.
(11)
At constant velocity , acceleration = 0
∑F = ma
∑F = m x 0
∑F = 0
Thus, as ball rolls down at constant velocity, the ball has no net force acting on it.
(12)
The conservation of momentum of the object is written as;
[tex]m_1v_1_i + m_2v_2_i = m_1v_1_f + m_2v_2_f[/tex]
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Electric potential depends on which factors?
A: Mass and amount of charge
B: Distance and amount of charge
C: Mass and distance
D: Density and amount of charge
Answer:
B: Distance and amount of charge
Explanation:
I am taking the quiz and this is the correct answer!
Electric potential depends on Distance and amount of charge.
What is electric potential?The electric potential is defined as the amount of work needed to move a unit of electric charge from a reference point to the specific point in an electric field.
Electric potential depends on what factors?For any charge located in an electric field its electric potential depends on the type (positive or negative), amount of charge, and its position in the electric field.
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How much net force is required make a 10 kg box accelerate at a rate of 5 m/s2?
O2N
0 50 N
0 15 N
0 100 N
sue is running down the street at a nice constant 4 m/s. She travels for 200 seconds. How far did she go?
Answer:
800 meters
Explanation:
4 x 200 is 800 meters.
What are some limitations to an H-R diagram
.
What change in the velocity's horizontal
component (v) and the range occurs
with each unit of time while getting
through the water?
Answer:
h the books
Explanation:
HELP me do this question PLEASE REPLY to you kripa and subscribe to you and ask for help me do this question PLEASE let them hate me and subscribe to the world 3rd birthday to you and I am sorry to hear that you are 4th and subscribe to the world of the books 4th century and subscribe to the world of the world of ❤❤
An object has a fixed volume and a variable shape before it changes state.
After the change, it can change in both shape and volume. Which change of
state has occurred? (APEX)
A. Gas to liquid
B. Solid to liquid
C. Liquid to gas
D. Gas to plasma
Answer:
AExplanation:
The answer is C because the liquid has to turn into gas which the liquid has volume and a variable shape. Gas does not have volume or shape.
An object has a fixed volume and a variable shape before it changes state. After the change, it can change in both shape and volume then the change of state occurred was liquid to gas
What is the matter?
Anything which has mass and occupies spaces is known as matter ,mainly there are four states of matter solid liquid gases, and plasma.
These different states of matter have different characteristics according to which they vary their volume and shape.
Liquid has a fixed volume but it can change its shape to any form but gases can change their volume as well as shape, therefore the correct answer is C.
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does light maicroscope require electric relay?
It needs something to light the light.
Todd and Angela set up a ramp and released several cars from the top. If Todd and Angela want to determine the average speed of their cars down the ramp, what information do they need? Group of answer choices
Answer:
The ramps length, height, degree, and the weight of the car.
Explanation:
Answer:
I think they need the slope of the ram(degree) .
& current gravitational acceleration
& the length of the ram and also l don't think mass of the cars are not needed becoz the acceleration of the cars are given by its,
Gravitational acceleration * sin( slope).
So then use that in v^2=u^2+2as equation.
s for length
a for acceleration
v for end velocity
u for start velocity
All interactions between the atmosphere and the geosphere involve
gases or particles in air and water
water and living things.
soil and gases or particles in the air
soil and living things
Answer:
The geosphere consists of the solid Earth and the atmosphere consists of the gaseous components in the air. Thus, the answer is C.
Explanation:
Answer:
C
Explanation:
2. A pitcher threw a baseball straight up at 39 meters per second. What
was the ball's velocity after 2.50 seconds?
How long will it take a ball to roll 20 meters along the floor at a speed of 0.4 m/s