A body of mass 1000kg is released from a height of 10m above the ground….

Physics WAEC 2015

A body of mass 1000kg is released from a height of 10m above the ground. Determine its kinetic energy just before it strikes the ground .[g = 10ms-2]

  • 10J
  • 103J
  • 104J
  • 105J checkmark

The correct answer is: D

Explanation

Ke = mgh

Ke = Pe

\(\frac{1}{2}\)MV2 = mgh

Ke = 1000 x 10 x 10

Ke = 100000J

Ke = 105J
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