Arace car starts from rest and speeds up uniformly to the right until it reaches a maximum velocity of 60\,\dfrac{\text m}{\text s}60 s m 60, space, start fraction, m, divided by, s, end fraction in 15 \,\text s15s15, space, s. what is the acceleration of the race car?

a car starts from rest so its initial speed is ZERO

now car accelerates uniformly and reached to final speed 60 m/s

so we can say

time taken to increase the speed is given as

now we know that acceleration is rate of change in velocity

so the acceleration of the car must be 4 m/s^2

d eras and periods

that would be because of both gravity and friction. so     c