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
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
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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
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