the distance an object travels in a certain amount of time (distance over time.)
the rate at which velocity changes.
the speed that an object has when it moves.
a tool for measuring length or distance
a tool that shows direction by pointing to the north.
a rhythmic disturbance that travels through space or matter.
a push or pull that causes a change in motion.
a characteristic of matter in which it will remain at rest unless a force acts upon it or if it is in motion, it will stay in motion unless a force acts upon it.
a force of attraction between objects.
the force that attracts all objects on Earth to Earth.
a force that opposes motion by rubbing.
the point on which a lever rests or turns. The support on which a seesaw balances.
a ramp or sloping surface.
Wheel and Axel
a wheel with a rod in the center.
a bar that is used to lift an object; makes it easier to move an object.
a set of wheels with teeth that fit together and pass on or change the movement of a machine.
a wheel with a grooved rim in which a rope or chain can run to help lift loads more easily.
having the property of attracting iron and certain other materials.