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A force of 20 N displaces an object by 5 meters in the direction of the force. Calculate the work done.
In case of negative work the angle between the force and displacement is
Define power. How will you differentiate between kW and kW h? If the velocity of a ball is tripled, what will be the ratio of
Four men lift a 250 kg box to a height of 1 m and hold it without raising or lowering it.
Which one of the following is not the unit of energy?
The work done on an object does not depend upon the
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