a fullback running at is stopped in

by a head$-$on tackler.

a$)$ What was the initial momentum of the fullback?

Correctb$)$ What was the final momentum of the fullback?

Correctc$)$ Calculate the impulse exerted by the tackler on the fullback.

Correctd$)$ Calculate the average force exerted by the tackler on the fullback.

Correct

Now a

car is traveling with a velocity of

$.$

e$)$ What is the momentum of the car?

Correctf$)$ If the car runs into a bale of hay and comes to a rest in $,$ what is the average force on the car?

Correctg$)$ If the car runs into a brick wall and comes to a rest in $,$ what is the average force on the car?

Correcth$)$ If the car runs into a brick wall and bounces back with a velocity of in $,$ what is the average force on the car?