Question

A body starts to slide over a horizontal surface with an initial velocity of 0.5m/s.Due to friction its velocity decreases at the rate of 0.05 m/s^2.How much time will it take for body to stop. ​

Answer 1

initial velosity of body u=0.5 ms-1

final velocity of body v=0

ms-1 as body comes to rest finally.

retardation of body = 0.05 ms-2

we know that v=u+at.

0=0.5-0.05t

T=0.5/0.05=10 sec