Question:
Two bodies of masses 4 kg and 5 kg are moving with equal momentum. Then the ratio of their respective kinetic energies is
Two bodies of masses 4 kg and 5 kg are moving with equal momentum. Then the ratio of their respective kinetic energies is
Updated On: Aug 1, 2022
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The Correct Option is D
Solution and Explanation
The kinetic energy is inversely proportional to the mass of the body, so $KE \propto \frac{1}{m}$
Hence $\frac{KE_1}{KE_2}=\frac{m_2}{m_1}=\frac{5}{4}$
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Concepts Used:
Kinetic energy
Kinetic energy of an object is the measure of the work it does as a result of its motion. Kinetic energy is the type of energy that an object or particle has as a result of its movement. When an object is subjected to a net force, it accelerates and gains kinetic energy as a result. Kinetic energy is a property of a moving object or particle defined by both its mass and its velocity. Any combination of motions is possible, including translation (moving along a route from one spot to another), rotation around an axis, vibration, and any combination of motions.
