Question

A motor car starts from rest. It moves with uniform acceleration . In 10 seconds, it attains a speed of 72 km/h on a straight road . Find its acceleration.​

Answer 1

Answer:

Step-by-step explanation:

initial speed ( u) is zero

final speed is 72kmph ( v)

using v = u + at

a = 7.2 km per seconds^2

Answer 2

Answer:

2 m/sec sq

Step-by-step explanation:

as acceleration is uniform/constant

v = u + at can be used

u = 0 (starts from rest)

v = 72* 5/18 m/sec = 20 m/sec

t = 10 sec

then, a= 2 m/sec sq