Kinetic and gravitational potential energy Quiz
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5 questions, one answer each
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1. A 4.0 kg trolley moves at 5.0 m/s. What is its kinetic energy?
- A. 10 J
- B. 50 J
- C. 100 J
- D. 20 J
2. A car doubles its speed. What happens to its kinetic energy?
- A. It doubles
- B. It becomes half
- C. It stays the same
- D. It becomes four times bigger
3. A 0.20 kg ball is lifted 3.0 m. What is its gain in gravitational potential energy? (g = 10 N/kg)
- A. 6.0 J
- B. 0.60 J
- C. 60 J
- D. 1.2 J
4. A pendulum swings from its highest point to its lowest point. Which statement is correct, ignoring friction?
- A. Kinetic energy is transferred to gravitational potential energy
- B. Both energies increase
- C. Gravitational potential energy is transferred to kinetic energy
- D. Energy is lost to the surroundings
5. A stone is dropped from a height of 45 m. Ignoring air resistance, what is its speed just before it lands? (g = 10 N/kg)
- A. 9.5 m/s
- B. 30 m/s
- C. 450 m/s
- D. 900 m/s