A 40 Kg Boy,on a Stunt,jumps from One Ice Sled

question 63

Multiple Choice

A 40 kg boy,on a stunt,jumps from one ice sled to another sled placed next to the first one,and then quickly jumps back to the first one.The horizontal speed relative to the ice for each jump is 2 m/s and the mass of each sled is 20 kg.What is the speed of the second sled after the second jump? Assume that there is no friction between the sled and the ice.

• A)1 m/s
• B)2 m/s
• C)3 m/s
• D)4 m/s
• E)8 m/s

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