Question

the momentum of a body of mass 0.5kg dropped from a certain height h when reaches the ground is 10Ns find value of h

Answer 1

as it is given that momentum is mv=10

it is given that m=0.5kg so the v= 10/0.5

or v=20m/s

this is the final velocity.

using formula v^2-u^2=2as, here u is zero because body is dropped from rest.

v^2=20X20=400

400=2X10XS or S=20m