More work was done in the skateboard that came to a stop because the one that rolled across the room moved on a surface with less friction while the second board used more work to move on a surface with much friction.
A protostar reaches equilibrium when gravity is balanced by the outward force of nuclear fusion.
Answer:
If an object moves in the opposite direction of a conservative net force, the potential energy will increase; and if the speed (not the velocity) of the object changes, the kinetic energy of the object also changes.
Explanation:
Hope i explained that clearly... :)
You're describing an increase in the object's kinetic energy, which depends
on speed, and no change in its potential energy, which depends on height.