Question $2$

An $80$kg athlete performs a drop jump $($jump immediately after landing$)$ from a $0\mathrm{.}3-$meter box. The jump height was $0\mathrm{.}4$ meters.

What was the net impulse on the ground?

Newton$*$Seconds

If the ground contact time is $0\mathrm{.}35$ seconds, what was the average GRF$?$

Newtons

$*$Round answers to nearest whole number $($no decimal$)$