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Q: When an object of 15kg is at a height of 5m from the ground, then how much energy it will contains?
  • A. 520 J
  • B. 528 J
  • C. 725 J
  • D. 735 J
Correct Answer: Option D - Potential energy = m×g×h Here, m =15kg, h = 5m and g = 9.8m/s² = 15×9.8×5 =735 J
D. Potential energy = m×g×h Here, m =15kg, h = 5m and g = 9.8m/s² = 15×9.8×5 =735 J

Explanations:

Potential energy = m×g×h Here, m =15kg, h = 5m and g = 9.8m/s² = 15×9.8×5 =735 J