Question

1. A man throws a stone of 0.5 Kg vertically upward with a velocity of 20 m/s. Find
( i)
the initial momentum
(ii) momentum at the highest point (iii) regarding force.

answer this question ..pls

Answer 1

vi=20m/s
vf=0m/s at highest point
mass =0.5kg
Momentum =?
Momentum (initial)= mvi =0.5×20=10kgm/s
Momentum at highest peak = mvf= 0.5×0=0kgm/s

Retarding force is the force that opposes its motion So
F=mg =0.5×10=50N