Question

A retarding force of 50N applied to a body of mass 20kg moving with initially with a speed of 15m per second . how long does the body take to stop.

Answer 1

Answer:

6 seconds

Explanation:

Compute acceleration

a = -F/m = -50 / 20 = -2.5 m/sec2

and v = 0

v = u + at

0 = 15 - 2.5 t

t = 15 / 2.5 = 6 secs

Answer 2

Answer.

45 meter is the stopping distance

and

it takes 6 seconds to stop.