Question

A car, initially at rest, picks up a velocity of 72kmh-1,over a distance of 25m.the acceleration of a car is

Answer 1

Answer: 8ms-2

Explanation: u=0(As the body is at rest)

v= 72kmh-1= 20ms-1

s=25m

a=?

We know the formula-  v^2-u^2 = 2as

20^2- 0^2= 2*a*25

400-0=50a

400=50a

a=400/50

a=8ms-2

Answer 2

Answer:

72÷25 =2.88 acceleration of a car.