Question

A body mass 5kg moving with 40m/s after 5 second it's velocity change to 60m/s find change in momentum

Answer 1

Answer:

Given,

m=5kg

u=20m/s

F=100N

t=10s

Force, F=ma

a=mF

a=5100m/s2

a=20m/s2

From 1st equation of motion,

v=u+at

v=20+20×10

v=20+200

v=220m/s

Answer 2

Answer:

100

Explanation:

change in momentum = 60×5 -40×5=100