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Q. 1. Compare the kinetic energy of an 900 kg car travelling at 30 m/s, and a 1,800 kg car at the same speed.

2. What is the velocity of a 1,500 kg car if its kinetic energy is 300 kJ?

3. Compare the kinetic energy of an 900 kg car travelling at 30 m/s, and a 1,800 kg car at the same speed.

4. A 150 pound man runs up a stairway 25 feet above ground level in 10 s. How much work did the man do?

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