Question

A body of mass 2kg is falling from a height of 50 metre. What is the change in its momentum when it is falling? After touching the ground what will be the momentum of the body?​

Answer 1

Answer:

W.D ( air resis ) + W. D ( gravity ) =ΔK.E

W.D (against are resistance ) =−(

2

1

mv

2

−mgh)

=−(

2

1

×2×225 − 20×10×20)

=−(225−400)

=175J

I hope this will help you please add me to brainlist