Question

mass of body is 2kg falls at height of 100m
calculate th final momentum just before it hits the ground​

Answer 1

Answer:

Mass of the body = 2kg. u = 0

H = 1 0 0m

s =ut + 1/2 gt^2

100 = 0 + 1/2 X 10Xt^2

=> 100 = 5t^2

=> t^2 = 20

=> t=4.4s

V=u + gt

= 0 + 10X4.4

= 44m/s

final momentum = mv

= 2x44 = 88kgm/s