Physics — Forces and Energy

Energy changes and dissipationSign up

Describe changes in energy that are a result of an event or process. · Know that energy tends to dissipate and in doing so it becomes less useful.

Gravity and motion in a vacuumSign up

Describe gravity as a force of attraction between any two objects and describe how the size of the force is related to the masses of the objects. · Understand that there is no air resistance to oppose movement in a vacuum.