The kinetic energy of a man is half that of a boy whose mass is half t – McqOptions

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1.	The kinetic energy of a man is half that of a boy whose mass is half that of the man. When the man speeds up by 5 m/s, his kinetic energy doubles that of the boy’s kinetic energy. What is the initial velocity of the man?
A.	5 m/s
B.	10 m/s
C.	15 m/s
D.	20 m/s
Answer» B.

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