Work done is measured as a product of force and displacement the direction of force.
Which of the following define work most accurately? 1. Work is the product of displacement and force in the direction of displacement. 2. Work is the product of force and speed. 3. When a force applied causes displacement in a direction, work is done. 4. Work is the product of distance and force applied.
How is the work done by a force measured when (i) force is in direction of displacement, (ii) force is at an angle to the direction of displacement?