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A 50kg girl runs up stairs in 70s, the stairs are 8.0m high. Take the gravitational field strength as 10N/Kg. What is the girl's potential energy when she is at the top of the stairs
3 years ago

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R_scott
m g h ... the run time is not a factor .. 50 kg * 10 N/kg * 8.0 m = ? J
3 years ago
DAVID
P.E=mgh
p.e=50*10*8
P.e=4000 joules or 4*10 cube{raise to power of 3}
3 years ago

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