The correct formula to find the velocity of a body with kinetic energy 'k' is:
V=2km
V=√2km
V=4k2m
V=12km
A
V=√2km
B
V=12km
C
V=4k2m
D
V=2km
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Solution
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Kinetic energy of a body is given by
k=12mv2
v2= 2km
v=√2km.
Hence, answer is option B.
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