Answered

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water falls off a cliff of height 20m at a rate of 50kg per second
calculate the mass of water that falls in 1 minute
calculate the gravitational potential energy lost by the water in 1 minute

Sagot :

Answer:

M = 50 kg / sec * 60 sec = 3000 kg       water that falls

PE = M g h     initial potential energy of water

PE = 3000 kg * 9.8 m/s^2 * 20 m = 588,000 joules of energy lost

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