Question

racing car at rest accelerates uniformly to a velocity of 144 km per hour in 20 seconds (a) find the value of acceleration of the car (b) find the distance covered by the car during this time​

Answer 1

hope it helps you.......

Answer 2

Explanation:

(a)  initial velocity (u)=0,v=144 km/hr = 40m/s  t=20sec

v=u+at ⇒ 40 = a(20) = a = 2

acceleration = 2

(b) v^2 = v^2 + 2as

⇒ 40 × 40 = 2 × 2 × 5

⇒ Distance = 400m