A projectile of mass 4kg is fired vertically and reaches a maximum height of 40m….

Physics JAMB 2019

A projectile of mass 4kg is fired vertically and reaches a maximum height of 40m. Calculate the potential energy at the highest point
(g = 10ms\(^{-2}\)

  • 1800J
  • 1600J checkmark
  • 600J
  • 440J

The correct answer is: B

Explanation

Potential energy at the highest point = mgh
PE = 4 × 10 × 40 = 1600J

There is an explanation video available .

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