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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.

Respuesta :

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

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