A 700-N Man Jumps Out of a Window into a Fire

Multiple Choice

A 700-N man jumps out of a window into a fire net 10 m below.The net stretches 2 m before bringing the man to rest and tossing him back into the air.The maximum potential energy of the net, compared to its unstretched potential energy, is:

A) 300 J
B) 710 J
C) 850 J
D) 7000 J
E) 8400 J