A man jumps onto a chair. A man climbs onto a chair by putting a leg first and then the other.
In both cases, the work has been the same. TRUE or FALSE...?
Spoiler!: The path is the same, so the change in potential energy is the same. But Work equals potential energy only if there are not non-conservative forces and how can you tell if there are not? Or more simple, how do you know that the change in kinetic energy is the same in both cases?