The bodies of one kg and four kg mass have same kinetic energy. The ratio in their momenta will be:
Correct answer: A. 1: 2
- A. 1: 2
- B. 1 : 16
- C. 1 : 4
- D. 1 : 1
Explanation
Kinetic energy, momentum and mass are related as:KE = P²/2mP² = KE × 2mAs KE1 = KE2, the ration will become,P1²/P2² = m1/m2P1/P2 = √m1/√m2 = √1/√4 = 1/2Hence, this option is correct.
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About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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