A68.0-kg male dancer leaps 0.30 m high.
(a) with what momentum does he reach the ground?
2.43

incorrect: your answer is incorrect.
kg · m/s

(b) what impulse is needed to stop the dancer?
-666.4

incorrect: your answer is incorrect.
n · s

(c) as the dancer lands, his knees bend, lengthening the stopping time to 0.050 s. find the average force exerted on the dancer's body.
48.6

incorrect: your answer is incorrect.
n

(d) compare the stopping force with his weight.
666.4

incorrect: your answer is incorrect.
(stopping force/dancer's weight)