Question

To calculate the change in kinetic energy, you must know the force as a function of _______. The work done by the force causes the kinetic energy change.'

Answer 1

Answer:

Distance

Explanation:

dW = F. dx

Answer 2

Answer: The force is as a function of Distance

Explanation:

The force and distance must be parallel to each other. Only the component of the force in the same direction as the distance traveled does any work. Hence, if a force applied is perpendicular to the distance traveled, no work is done. The equation becomes force times distance times the cosine of the angle between them.

where both the force F and acceleration are vectors. This makes sense since both force and acceleration have a direction.

On the other hand, the kinetic energy

K=12mv2

looks completely different. It doesn't seem to depend on the direction.