Question

2. When the velocity and mass of an object is doubled,
the ratio of initial energy Ki to the modified Kinetic
energy
km is​

Answer 1

Answer:

The kinetic energy of a body of given mass is directly proportional to the square of its velocity. When momentum is doubled, mass remaining constant, this means velocity is doubled. Hence, kinetic energy becomes 22=4 times i.e. say from 100 units to 400 units. and the percentage increase in kinetic energy is 400−100=300%.

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