Part A

Calculate the impulse experienced when a $66kg$ person lands on firm ground after jumping from a height of $2\mathrm{.}5m.$

Express your answer using two significant figures.

$J=,kg*\frac{m}{s}$

Part B

Part C

Estimate the average force exerted on the person's feet by the ground if the landing is with bent legs. When the legs are bent, assume the body moves about $40cm$ during impact.

Express your answer using two significant figures.

$F_{\text{a}\text{v}\text{g}}=$

$N$