Question

A body starts to slide over a horizontal surface with initial velocity of 12m/s. Due to friction its velocity decreases at the rate of 2ms2. How much time will it take for body to stop.

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Answer 1

Step-by-step explanation:

initial vel.(u)=12m/s

acceleration(a)=-2m/s^2

final vel.(v)=0 as it comes to rest

let the time taken be 't' sec

by 1st equation of motion

v=u+at

0=12+(-2)t

-12=-2t

=> t=6 sec