Part B

Estimate the average force exerted on the person's feet by the ground if the landing is stiff$-$legged. With stiff legs, assume the body moves $1\mathrm{.}1$ cm during impact. $[$Hint$.$ The average net force on her which is related to impulse, is the vector sum of gravity and the force exerted by the ground.$]$

Express your answer using two significant figures.

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

$$

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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 $45$ cm during impact.

Express your answer using two significant figures.

$$

$$

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