Answer to Question #82298 in Physics for amen

Question

If you were to throw a ball out of the window of a class room, what would its momentum vector be just as it hits the ground?

Answer 1

The height of the window is h.

From the conservation of energy:

mgh=1/2 mv_y^2

v_y=√2gh

Form the conservation of momentum the momentum vector will be:

p_f=p_i-(m√2gh)j

Where j directed upwards, p_i is initial momentum vector.