What is needed for work to be done? A force must push on an object without moving it. A force must pull on an object without moving it. A force must cause an object to move along the same direction as the force. A force must act on an object while an equal force acts oppositely on the object.
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i think option 4 is correct but i m confused for 3 as well
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work is only done if a force causes a displacement in its own direction or in ots component's...
btw the third point dat.....'a force must cause an object to move along the se direction as the forced' is correct
btw the third point dat.....'a force must cause an object to move along the se direction as the forced' is correct
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