A 600 kg great white shark is lurking below an observation cage. His

movement is being studied from a series of motion sensors below the

boat. The shark leisurely charges the cage, strikes it and makes the

cage rattle. Later, the shark returns for another run at the cage. The

shark strikes the cage with 12.800 N of force. The shark traveled for

10 m in making its run. The cage is designed to withstand 124,500N-

m of work" before it breaks. Should the man in the cage be worried?

Explain.