Question

What is the final and initial velocity in the question "a car moves with a velocity of 72km/hr. It is brought to rest in 10seconds

Answer 1

Answer:

U = 20 m/s

V = 0 m/s

Explanation:

Given :-

A car moving with velocity of 72 km/h or 20 m/s.

It comes to rest in 10 seconds.

To find :-

Initial velocity and final velocity of car.

Solution :-

(As given in question)

Initial velocity of the car = 20 m/s

Final velocity of the car = 0 m/s

(But retardation can be found)

a = (v - u)/t

a = (0 - 20)/10

a = -20/10

a = -2 m/s