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An object thrown at a certain angle to the ground moves in a c... - Science
Question
An object thrown at a certain angle to the ground moves in a curved path and falls back to the ground. The initial and the final points of the path of the object lie on the same horizontal line. What is the work done by the force of gravity on the object?
Answer
The work done by the force of gravity on the object is zero.
Reason:
The force of gravity acts vertically downwards, but the net vertical displacement of the object is zero because the initial and final points are on the same horizontal level. Since displacement in the direction of force is zero, work done is zero.
