annaebrown9737
06.04.2021 •
Physics
A child pulls a sled up a snow-covered hill. The child does 504 J of work on the sled. If the child walks 15 m up the hill, how large of a force must the child exert?
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Ответ:
F = 33.6 N
Explanation: work = force · distance or W = F·s
Force F = W/s = 504 J/15 m
Ответ: