If momentum is increased by two times, kinetic energy (K.E) increases by
Correct answer: C. four times
- A. two times
- B. 3 times
- C. four times
- D. remains
Explanation
Kinetic energy is directly proportional to the square of momentum. If momentum is increased by two times, the kinetic energy will increase by a factor of 2^2=4.Incorrect Options Explanation:(a) two times: Kinetic energy increases with the square of the momentum, not directly with it.(b) 3 times: This is not accurate according to the relationship between kinetic energy and momentum.(d) remains: Kinetic energy is directly related to momentum, so if momentum increases, kinetic energy also increases.
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About Force and Motion
Displacement, velocity and acceleration describe motion, including the horizontal and vertical components of projectile motion. The chapter connects these quantities with Newton's laws, momentum and impulse, then applies conservation of momentum to collisions, distinguishing elastic collisions from inelastic ones.
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