Question

The deceleration of a vehicle moving in straight line that changes its velocity from 54 km/h to a dead stop in 10 seconds is

Answer 1

Answer:

The deceleration of a vehicle moving in straight line that changes its velocity from 54 km/h to a dead stop in 10 seconds is

Explanation:

my answer 1.5m/s^2

Answer 2

Explanation:

1 km/h = 5/18 m/s

54 Km/h = 54*5/18 = 15 m/s

change in velocity = v - u

initial velocity, u = 15 m/s

final velocity, v = 0

deceleration = - acceleration

= - ( v - u ) / t

= - (0 - 15 ) / 10

= 1.5 m / s2