Question

Calculate the changing momentum of a body laying 5 kg when its velocity decreases from 20m/sec to 0.2 m/sec

Answer 1

U=20m/s
V=0.20m/s
m=5kg
Final momentum= mv
= 5*0.20
=1.00
Initial momentum= mu
=5*20
=100
Change in momentum=mv-mu
=1-100
-99kgm/s