a 0.5kg ball is dropped from a height of 3 metres. what is its gravitational potentiial energy when it is released?
回答 (3)
2017-09-19 6:19 pm
Take g = 9.81 m/s²
Gravitational potential energy
= m g h
= 0.5 × 9.81 × 3 J
= 15 J
Gravitational potential energy
= m g h
= 0.5 × 9.81 × 3 J
= 15 J
2017-09-19 8:03 pm
PE = m*g*h
m= 0.5kg
g = standard gravity = 9.80665 m/s2
h = 3 m
PE = 0.5 * 9.80665 * 3 = 14.709975 J
Now round down to appropriate sigfigs:
15 J
m= 0.5kg
g = standard gravity = 9.80665 m/s2
h = 3 m
PE = 0.5 * 9.80665 * 3 = 14.709975 J
Now round down to appropriate sigfigs:
15 J
2017-09-19 6:18 pm
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收錄日期: 2021-04-18 17:51:10
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https://hk.answers.yahoo.com/question/index?qid=20170919101326AAtirAD