A car crashes into a large tree that does not move. The car goes from

$27$ m$/$s to $0$ in $1\mathrm{.}4$m$.$ Thankfully the driver was wearing a seat belt and

was unharmed.

Help on how to format answers: units

$($a$)$ What is the magnitude of the impulse that is applied to the driver by

the seatbelt, assuming he follows the same motion as the car and they

weigh $70$ kg$?$

Imp $=$

$($b$)$ What is the magnitude of the average force applied to the driver by

the seatbelt?

F $=$

$.$