Light and heavy bodies have equal kinetic energies. Which one has the greater momentum?
Correct answer: A. Heavy body
- A. Heavy body
- B. Light body
- C. Both have same momentum
- D. None of these
Explanation
Heavy body: Momentum is given by the product of mass and velocity. Since the heavy body has a larger mass, even if the kinetic energies are equal, its momentum would be greater due to its mass.
This question appeared on the ETEA MDCAT 2009 paper, which you can sit online with every answer explained.
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About Linear Momentum
Linear momentum is the vector product of mass and velocity, p = mv, and changes when a net external force acts. Work includes impulse as the change in momentum, conservation of momentum in isolated systems, collisions and explosions, and the distinction between elastic, inelastic and perfectly inelastic collisions.
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