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# Skydiving

APPH12-1BLUPS

A $60\text{ kg}$ skydiver is in the vertical free-fall portion (the parachute has not been deployed) of her jump. $3.0\text{ seconds}$ after leaving the aircraft, the force of air resistance on her is $420\text{ N}$. What is the acceleration of the skydiver at this instant?

A

$2.8 \text{ m/s}^2$ down.

B

$7.0\text{ m/s}^2$ down.

C

$17\text{ m/s}^2$ down.

D

$170\text{ N}$ down.