A book has a mass of 5 kg and is 20 m above the ground; what is its potential energy? Solve using Gravitational potential energy = mass * acceleration of gravity * height (g = 9.81 m/s^2)
a) 100 J
b) 100 N
c) 981 N
d) 981 J
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Answer:
981 J
Explanation:
P.E=mgh
P.E=5*9.81*20
P.E= 981 J
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