Physics for IGCSE & O level - Forces And Motion (Section 8 - No. 3)
Which of the following relates to work done on an object?
When there is no resultant force on the object.
When the object moves in the same direction as the force.
When the object does not change its velocity.
When the direction of the force and the direction of the movement are at right angles.
Giải thích
Work done is related to the application of force causing the object to move in the same direction as the force