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Title: John's mass is half the mass of Jill. They both start walking and John moves twi Post by: ppk on Apr 11, 2012 John's mass is half the mass of Jill. They both start walking and John moves twice as fast as Jill. What is the ratio of the kinetic energy of Jill to the kinetic energy of John?
A) 4 B) 2 C) 1 D) 1/2 E) 1/8 Title: Re: John's mass is half the mass of Jill. They both start walking and John moves twi Post by: sci_expert on Apr 11, 2012 D
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