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A boy carrying a backpack and moving to the left. Is there work done on the backpack by the force used to lift it?
Mateo was asked to move the teacher’s table to the left side of the classroom. In order to do so, he consumed 50 N for moving the table to a distance of 2 m. How much work is done in pushing the table?
A 20 kg box containing books was lifted from the floor to a 1m high table. How much work is done by gravity in lifting the box?
In a reenactment of the famous Newton’s apple drop, the apple was dropped to a height of 3 m. If the work done by gravity is 15 J, how heavy is the apple?
In the same apple drop experiment, another trial was conducted. A 100 g apple produced the same 15 J of work done by gravity. Calculate the height the apple was dropped.
Sagot :
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