Question

A marble rolling on a smooth floor has an initial velocity of 0.04 m/s^2. if the floor gives retardation of 0.02 m/s^2. calculate the time it will take to come at rest

Answer 1

wrong question....velocity can not be in m/sec^2

but if it is 0.04 m/s

t = 0.04/0.02 = 2sec