Question

a force of 12 N starts acting on a mass of 1 kg kept at rest. find momentum at 1,2 and 3 seconds

Answer 1

Explanation:

given that,

Force,F=12N

mass,m=1kg

so,acceleration,a=F/m=12/1=12m/s^2

if,

the begining velocity,u=0

so,

the velocity after 1sec is,v=u+at=0+12×1=12m/s

the velocity after 2sec is,v1=u+at1=0+12×2=24m/s

and the velocity after 3sec is,v2=u+at2=0+12×3=36m/s

hope its help u.Thanks.