Question

a car is moving speed of 18 km/ hr it start repeating uniformly and 2 m/sec andcome to rest. find the distance travels.

Answer 1

If that repeating you meant is retardation then,

v = 0

u = 5 m/s

a = -2 m/s

We will use third equation of motion

v^2 = u^2 + 2aS

0 = 25 - 4S

4S = 25

S = 25 / 4

S = 6.25 m