A car experiences uniform acceleration

AI Thread Summary
A car undergoes uniform acceleration of 5 m/s² for 6 seconds, followed by a constant velocity phase lasting 14 seconds, and finally decelerates to rest over 5 seconds. To determine the total distance traveled, kinematic equations such as vf = vo + at and x = vot + 0.5at² are essential. The first and third phases require these equations to calculate distance, while the second phase involves maintaining constant velocity. Participants are encouraged to show their work to receive further assistance. The discussion emphasizes the importance of effort in problem-solving.
Cris911
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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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please show your attempt for solving the question ..
 
i can't because i don't know how to do it
 
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 ..
 
alright cheers bud i'll give it a go :)
 
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