Physics (AS & A Level) · Oct / Nov 2022 · Paper 11 · Question 18
9702Gravitational potential energy and kinetic energy
An alpha-particle has 2.2 × 10⁻¹³ J of kinetic energy. What is the speed of the alpha-particle?
- A4.1 × 10⁶ m s⁻¹
- B5.8 × 10⁶ m s⁻¹
- C8.1 × 10⁶ m s⁻¹
- D1.2 × 10⁷ m s⁻¹
As printed in the paper
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Correct answer: C. 8.1 × 10⁶ m s⁻¹
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