Physics (AS & A Level) · May / June 2018 · Paper 11 · Question 8
9702Gravitational potential energy and kinetic energy
The momentum of a car of mass m increases from p1 to p2. What is the increase in the kinetic energy of the car?
- A\frac{(p_2^2 - p_1^2)}{2m}
- B\frac{(p_2 - p_1)^2}{2m}
- C\frac{p_2 - p_1}{2m}
- D\frac{p_1 - p_2}{2m}
As printed in the paper
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Correct answer: A. \frac{(p_2^2 - p_1^2)}{2m}
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