The mass and velocity of an object determine this.
momentum
Stored energy.
potential energy
Change in velocity during a period of time.
acceleration
The distance an object moves over a given amount of time in a certain direction.
velocity
A fixed, unmoving object or location.
reference point
Energy due to motion
kinetic energy
Speed x time = this.
distance
Distance divided by time = this.
speed
To change an objects positon.
motion
A force that works against a moving object.
friction
Potential energy and kinetic energy are forms of this.
mechanical energy
A force that keeps an object from moving indefinately in a straight line.
gravity
The resistance to a change in motion.
inertia