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How much work does gravity do on a 0.160-kg ball falling from a height of 20.0 m? (Neglect air resistance.)answer in:____ J

User Beno Odr
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1 Answer

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First, we need the formula for gravitational potential energy


U_g=mgh

the mass is .16 kg, g = 9.8 m/s^2, and h = 20 meters

Plugging all of these into the formula yields us,

U = (.16)(9.8)(20) = 31.36 joules

User Bsplosion
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