a 20kg rock is on the edge of a 100m cliff. what gravitational energy does the rock process relative to the base of the cliff

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07-12-2016
Physics

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a 20kg rock is on the edge of a 100m cliff. what gravitational energy does the rock process relative to the base of the cliff

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AL2006 AL2006 · Answer 1 · 2016-12-07T16:02:05+01:00

AL2006 AL2006

07-12-2016

Gravitational potential energy = (mass) x (gravity) x (height above the reference)

   = (20 kg) x (9.8 m/s²) x (100 m)

   = (20 x 9.8 x 100) kg-m²/s²

   = 19,600 joules .

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