Speed is unchanged because work done on an object is
A)zero
B)positive
C)negative
D)infinite

Question

Quizplus · Accepted Answer

Work done is defined as the force applied to an object times the distance the object moves in the direction of the force. If the speed of an object remains unchanged, it implies that there is no net work done on the object, meaning the work done is zero. This could be because no force was applied, the force applied was perpendicular to the direction of motion, or forces were applied but they canceled each other out.

Speed Is Unchanged Because Work Done on an Object Is