Question

A car is moving at a speed of 36 km/hr after two seconds it is moving at 54km/hr cailculate the acceleration of the car?

Answer 1

Explanation:

Initial velocity (u) = 54 km/hr

Final velocity (v) = (54 - 36) km/hr

Time (t) = 4 seconds

We know v = u - at

⇒ 18 = 54 - a × 4

or 4a = 54 - 18

or a =

4

36

=9km/h

2

∴Retardation = 9 km/h

2