A car experiences uniform acceleration

In summary, the car initially at rest experiences uniform acceleration of 5m/s2 for 6 seconds, followed by constant velocity for 14 seconds, and then deceleration for 5 seconds. To find the distance traveled, you can use the kinematic equations vf = vo + at and x = vot + 0.5at*t. Please show your attempt for solving the question, as I am not allowed to give solutions. Good luck!
  • #1
Cris911
3
0
1. A car initially at rest experiences uniform acceleration of 5m/s2 for 6 seconds. It maintains constant velocity for 14 seconds and is then brought to rest in 5 seconds by a uniform retardation.
a. Find out how far the car has travelled.
b. Find the total angular displacement of one of the wheels
 
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  • #2
please show your attempt for solving the question ..
 
  • #3
i can't because i don't know how to do it
 
  • #4
I am not allowed to give solution .. but I will try to explain the question and what are you supposed to do ..


in brief,
1) the car experience a constant acceleration for 6s.
2) then it experience a constant velocity for 14s.
3) finally, it experience deceleration for 5s.

it is clearly that you are going to use the kinematic equations:
vf = vo + at , (where vf:final velocity .. vo: initial velocity .. a: acceleration .. t:time)
x = vot + 0.5 at*t (x is the distance)

there are other equations, but i believe you can solve your question using those equations (if you needed other equation, go ahead and use it)

you can use these equations in my statements in 1 and 3 to find the distance .. in statement 2 you have to consider something else to find the distance ..

thats all i can say.. please show your effort otherwise i won't be able to help you farther than this ..


dont give up and try .. good luck ..
 
  • #5
alright cheers bud i'll give it a go :)
 

1. What is uniform acceleration in a car?

Uniform acceleration in a car refers to the consistent increase in velocity over a period of time. This means that the car's speed is changing at a constant rate, resulting in a straight line on a velocity-time graph.

2. How is uniform acceleration different from non-uniform acceleration in a car?

Uniform acceleration is when the car's speed increases or decreases at a constant rate, while non-uniform acceleration is when the car's speed changes at varying rates. This results in a curved line on a velocity-time graph.

3. What causes a car to experience uniform acceleration?

A car experiences uniform acceleration when there is a constant force acting on it, such as pressing on the gas pedal or going downhill. This force causes the car's speed to increase or decrease at a constant rate.

4. How is uniform acceleration calculated in a car?

Uniform acceleration can be calculated by dividing the change in velocity by the change in time. This is represented by the formula a = (vf - vi) / t, where a is the acceleration, vf is the final velocity, vi is the initial velocity, and t is the time.

5. Can a car experience uniform acceleration while turning?

No, a car cannot experience uniform acceleration while turning because the direction of the car's velocity is constantly changing. Uniform acceleration only occurs when there is a constant change in speed in a straight line.

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