Physics
A light and a heavy body have equal K.E. Which body will have a greater momentum?
- heavy
- light
- both
- cannot say
Work, Energy & Power
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Answer
heavy
Reason — Kinetic energy is given by K = mv2 and momentum by p = mv. For the same kinetic energy, momentum can be written as p = and since momentum depends on the square root of mass, the body with the greater mass will have greater momentum when kinetic energies are equal.
Hence, heavy body will have a greater momentum.
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