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HELP ME NOW PLEASE !!! A stone of 4.5 kg mass is falling from the top of a 60 m high multi storey building.Find the kinetic energy of the stone when it reaches the ground.
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6 votes
6 votes
HELP ME NOW PLEASE !!!

A stone of 4.5 kg mass is falling from the top of a 60 m high multi storey building.Find the kinetic energy of the stone when it reaches the ground.

User Ragesz
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1 Answer

27 votes
27 votes

The kinetic energy will be equal to the potential energy at top

  • PE=mgh

m is mass

h is height

  • PE=4.5(60)(9.8)
  • PE=2646J
User Alida
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