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In which case is **no** work done on the object? | StemPy Lab
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In which case is **no** work done on the object?
Physics
Easy
High School (9–10)
General
Mechanics › Work, Energy and Power
Created by
StemPy Lab
In which case is
no
work done on the object?
A boy kicks a ball, and it rolls away
A crane lifts a steel beam
A horse pulls a cart along a road
A man holds a
20
kg
20\ \text{kg}
20
kg
sack on his head and stands still
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Created by StemPy LabCreated by StemPy Lab