the change in an object’s position with respect to time and in comparison to other objects
motion
The distance an object travels per unit of time
speed
Forces on an object that do not change the motion of the object
balanced forces
change of an object’s speed or direction
acceleration
forces on a object that cause a change in the motion of an object
unbalanced forces
A push or a pull that can change the motion of the object
force
A measure of the force of gravity on an object
weight
a measure of speed and direction of an object
velocity
an attraction between two objects
gravity
unit of force
Newton
sum of all forces acting on an object
net force