Multiple choice

Which of the following has the highest potential energy?

  1. 10 kg stone at a height at 20 m

  2. 50 kg stone at a height at 2 m

  3. 40 kg stone at a height of 5 m

  4. 30 kg stone at a height of 7 m

  5. 20 kg stone at a height of 8 m
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

This has highest potential energy. P.E= mgh, where m=30 kg, h= 7 m, g=gravitational force, hence so P.E. = 30 * 7 = 210 joule

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