Work is done on an object when
A)it moves in a circle at constant speed.
B)it is accelerated in a straight line.
C)it is carried horizontally at constant speed.
D)all of the above

Question

Quizplus · Accepted Answer

Work is defined as the product of force and displacement in the direction of the force. When an object is accelerated in a straight line, a force is applied in the direction of the acceleration, and the displacement is also in that direction, resulting in work being done on the object. However, in the other options given, there is either no force or no displacement in the direction of the force, so no work is being done on the object.

Work Is Done on an Object When