Answer: "For a projectile with no air resistance, at the peak of its path, it's velocity is equal to zero"
Explanation:
Suppose that you throw an object up. The initial vertical velocity will be positive, and the acceleration (the gravitational acceleration) will point downwards, meaning that it opposes to the initial direction of the velocity, and that decreases the velocity as the time goes by.
There will be a point where the velocity ( that was positive until now, so until now the height of the object was increasing), is equal to zero, this means that at this moment the object stops moving, and after, because we still have negative acceleration, the velocity will start become negative, and the object will fall down.
Then that point where the velocity was zero is the peak of its path, then we can conclude that:
"For a projectile with no air resistance, at the peak of its path, it's velocity is equal to zero"
A 0.5kg fan cart was at rest when its fan was turned on for 4 seconds.
The fan produces a forward force on the cart of 1N.
There is no resistance acting on the cart.
Determine the acceleration of the cart during the 4 second interval.
m/s/s
Answer:
555
Explanation:
How long will it take a horse to go from rest to 19 km/hr if it is accelerating at 5
km/hr 2 ?
Answer:
I attached a PFD with the answer to your question and roughly 50 others involving acceleration and how to calculate it. This PDF gives you the answers to all the question whilst showing you an in-depth explanation on how they got the answer. Hopefully that helps
Explanation:
May I have brainliest please? :)
PLS HELP!!
What do you think is happening to a brick’s potential energy as it is falling? Why do you think that?
Answer:
As an object falls from rest, its gravitational potential energy is converted to kinetic energy.
Explanation:
It converts to kinetic energy because it is moving
Cystic fibrosis is a disease that
A. causes all those infected to live only into their teen years
B. makes it difficult to breathe
C. can be cured with proper medication
D. occurs most frequently people of Asian descent
Please select the best answer from the choices provided.
Ο Α
B
Answer:
B
Explanation:
A car accelerates at 2.90 m/s2. Assuming the car starts from rest, how much time does it need to accelerate to a speed of 23.6m/s?
Answer:
[tex] \huge{ \boxed{ \bold{ \sf{8.13 \: seconds}}}}[/tex]
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☯ Question
A car accelerates at 2.90 m/s . Assuming the car starts from rest , how much time does it need to accelerate to a speed of 23.6 m/s ?☯[tex] \underbrace{ \sf{Required \: Answer : }}[/tex]
✒ Given :
Initial velocity ( u ) = 0 Final velocity ( v ) = 23.6 m/sAcceleration ( a ) = 2.90 m/s²✒ To find :
Time ( t )✎ We know ,
[tex] \boxed{ \underline{ \sf{acceleration \: (a) \: = \frac{final \: velocity \: (v) - initial \: velocity \: (u )}{time \: ( \: t \: )}}}}[/tex]
Substitute the values :
➵ [tex] \sf{2.90 = \frac{23.6 - 0}{t}} [/tex]
➵ [tex] \sf{2.90 = \frac{23.6}{t}} [/tex]
Apply cross product property
➵ [tex] \sf{2.90 \: t \: = 23.6}[/tex]
Divide both sides by 2.90
➵ [tex] \sf{ \frac{2.90 \: t}{2.90} = \frac{23.6}{2.90} }[/tex]
➵ [tex] \sf{t = 8.13 \: seconds}[/tex]
Hope I helped!
Have a wonderful time シ
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5. A helicopter is exerting a force of 100,000 newtons. What is its mass
if it is accelerating at a rate of 100 m/s??
Freud believed that. Felt inferior to. And that they were more vulnerable to psychological disorders
Answer:
women... men
Explanation:
Answer:
c. women... men
Explanation:
edge 2021
1. A pumpkin with a mass of 2 kg accelerates 2 m/s/s when an unknown force is applied to it. What is the amount of the force?
Answer:
4 Newton
Explanation:
F=ma therefore 2kg*2m/s/s=4 Newton
Express 2.69 x 10° in standard form.
Help!
Answer:
2.69
Explanation:
2.69 x 1
10^0 = 1
Whenever one object exerts a force on another object, the second object exerts a force of the same magnitude on the first object, but in the opposite direction
Answer:
A
Explanation:
Newton third law of motion state that action and reaction are equal and opposite
Answer:
Always true
Explanation:
I got it right on the test.
Where does digestion begin?
Answer:
Digestion begins in the mouth, when you chew.
Which is the larger value: 6 x 10^3 or 6 x 10^8 ?
Help!
Answer:
6 x 10^8
Explanation:
Take out both the 6, then look at what exponent is bigger, 3 or 8, 8
Answer:
105 = 10 x 10 x 10 x 10 x 10 = 100,000 (5 zeros)
108 = 10 x 10 x 10 x 10 x 10 x 10 x 10 x 10 = 100,000,000 (8 zeros)
Explanation:
Give a description of of lower mantle
Answer:
The lower mantle is the liquid inner layer of the earth from 400 to 1,800 miles below the surface.
Explanation:
A tree frog leaping upward off the tree branch is pulled downward by
gravity and lands on another branch instead of continuing on in a straight
line. *
AND TELL US WHY IT IS RELATED TO IT.
Answer:
Yeah I think you're right
Explanation:
Because every obj is in motion till acted upon by a force(the branch)
If you run a complete loop around an outdoor track of length 400 m in 100 s, find your(a) average velocity and (b) average speed. *
Answer:
a) 0 m/s
b) 4 m/s
Explanation:
The average velocity would end up being 0 because it is displacement over time and the displacement here is 0. However, speed is total distance over time which here is 400/100 so it is 4.
What kind of father grows his children and then swallows them once they are grown?
there isnt choices its a type it in the box thing
Answer:a farmer?
Explanation:
Because they raise their livestock or plants then eat them once they are big enough or fully grown?
If you drop a 60 kg rock and a 30 kg rock from the same height at the same time and in the absence of air drag, they fall with?
Which characterstic is related to kinetic enegry but not potential energy.
A. An object's speed
B. An objects height
c. an objects mass
d. an objetc's shape
Answer:
A
Explanation:
Kinetic energy is the energy of motion
KE=.5mv^2
>m= mass
>v= velocity (m/s)
PE=mgh
>m= mass
>g= acceleration due to graviry
>h= height
Which are the products in the equation CH3SH + 4O2 → CO2 + SO2 +2H2O? Check all that apply. CH3SH, O2 ,CO2, SO2, H2O
Answer:
C D E is the answer
Explanation:
The products of the reaction are; CO2, SO2, H2O.
What is a chemical reaction equation?A chemical reaction equation equation is composed of;
Reactants on the left hand sideProducts on the right hand sideThe interaction between the reactants give rise to the formation of the products. The products are the result of rearrangement of atoms in the reactants.
For the reaction; CH3SH + 4O2 → , the products of the reaction are; CO2, SO2, H2O.
Learn more about chemical reaction: https://brainly.com/question/6876669
Calculate the normal force and force applied of a box that has a mass of
50kg and that is moving rightward with an acceleration of 7.2m/s^2
Heya!!
For calculate force, lets applicate second law of Newton:
[tex]\boxed{F=ma}[/tex]
Δ Being Δ
F = Force = ?
m = Mass = 50 kg
a = Aceleration = 7,2 m/s²
⇒ Let's replace according the formula:
[tex]\boxed{F= 50\ kg * 7,2 m/s^{2}}[/tex]
⇒ Resolving
[tex]\boxed{ F = 360\ N}[/tex]
Result:
The force is 360 Netwons.
Good Luck!!
true or false. because the speed of an object can change from one instant to the next, dividing the distance covered by the time of travel gives constant speed
true. Because the speed of an object can change from one instant to the next, dividing the total distance covered by the time of travel gives. average speed.
Answer:
False.
Explanation:
Dividing the distance covered by the time would give us the average speed, not a constant speed. Constant speed exists only if the speed of an object does not change.
1. Calculate the amount of work done for the object with a distance of 25 meters and
a force of 9 Newtons. Work = Force X Distance
Forces can be:
A. Pushes only
B. Pulls only
C. Pushes and pulls
Answer:
c
Explanation:
A scooter has a mass of 250 kg. A constant force is exerted on it for 60.0 s. During the time the force is exerted, the scooter increases its speed from 0.00 m/s to 28.0 m/s. What is the magnitude of the force exerted on the scooter?
Answer:
5500
Explanation:
I cant explain it but when i asked my teacher thats what he told me
A particle starts to move in a straight line with a velocity of 10 m/s
and deceleration - 2 m s-2. What will the velocity of particle be after
5 s and after 10 s?
a 30 m/s after 5 s and 20 m/s after 10 s.
b Zero after 5 s and 30m/s after 10 s.
C 20 m/s after 5 s and 30 m/s after 10 s.
d Zero after 5 s and -10 m/s after 10 s.
Answer:
Explanation:
Lol man
Answer: Zero after 5 s and -10 m/s after 10s
Explanation:
1 nm is equal to how many centimeters
Answer:
0,00000001 cm = 1 nm is correct
.. An object has a mass of 40 000 kilograms
and a volume of 5 cubic metres. What is its
density?
Answer:
8000 kg/cm^3
Explanation:
The density formula is P = M/V
Density = P = ? expressed in kg/m^3
M = mass = 40,000 kg
V = volume = 5 m^3
P = 40,000/5
P = 8000 kg/m^3
Two persons A and B are walking with speed 5 km/h and 6 km/h
respectively in the same direction. Find how far will B be from A after
2 hours.
a 6 km
b 2 km
C 5 km
d 3 km
Answer:
b
Explanation:
The relative distance can calculate by dividing the time travelled by the speed difference between points A and B. Considering that B is going more quickly than A, we substract A's speed from B's speed.
Relative Speed = Speed of B - Speed of A
Relative Speed = 6 km/h - 5 km/h
Relative Speed = 1 km/h
Now, we can calculate the relative distance traveled by B after 2 hours:
Relative Distance = Relative Speed * Time
Relative Distance = 1 km/h * 2 hours
Relative Distance = 2 km
Therefore, B will be 2 kilometers away from A after 2 hours of walking in the same direction.
Learn more about relative speed here:
https://brainly.com/question/14362959
#SPJ2
If a thermometer reads 52° F, what is the temperature in Celsius?
8.5 ° C
18.73 ° C
11.11 ° C
72.25 ° C
Answer:
11.11 C
Explanation:
(52 f-32) * 5/9= 11.11
Answer:
sheeeeshhh
Explanation:
8.5 i took test
I’ll give another brainlist now your going up a hill and want to maximize the force you deliver to the wheel you aren’t concerned with how many strokes you are making but you want to get as much force to the wheel as possible which gear combination would you use now and why
Answer: The biggest gear
Explanation:
Small gears allow the fastest speed but least amount of power, all the while, the bigger the gear the more power is going to be present.
If this isn't enough I already completed this assignment.