A running man has half the kinetic energy of that of a boy of half of his mass. The man speeds up by 
so as to have same 
as that of the boy. The original speed of the man will be
a)
b)
c)
d)
A running man has half the kinetic energy of that of a boy of half of his mass. The man speeds up by so as to have same as that of the boy. The original speed of the man will be
a)
b)
c)
d)
Question ID - 50758 | SaraNextGen Top Answer
A running man has half the kinetic energy of that of a boy of half of his mass. The man speeds up by so as to have same as that of the boy. The original speed of the man will be
a)
b)
c)
d)
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A running man has half the kinetic energy of that of a boy of half of his mass. The man speeds up by |
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a) |
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b) |
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c) |
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d) |
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1 Answer
127 votes
Answer Key / Explanation : (c) -
(c)
Let 
mass of boy, 
Mass of man
velocity of boy
velocity of man
…(i)
…(ii)
Putting 
and solving 
127 votes
Answer Link
127