What mass of water must fall 12m in order to lose 10,800J of gravitational potential energy ?
Potential energy = (mass) x (gravity) x (height)
10,800J = (mass) x (9.8 m/s²) x (12m)
Mass = (10,800J) / (9.8 m/s² x 12m)
Mass = (10,800 / 9.8 x 12) (Joule-sec²/m²)
(Units: Joule-sec²/m² = N-m-sec²/m² = (kg-m/s²)-m-sec²/m² = <u><em>kg </em></u>)
<u>Mass = 91.8 kg</u>
5.678 * 10^10 is the answer
Well, the answer to this question is D) 10 m/s^2 in the direction of the meteoroids motion.
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