1
the change in movement; when an object speeds up, slows down, stops, or changes direction.
Net Force
Forces that are equal in size and opposite in direction. They act on an object without causing a change in the object's motion.
Balanced Forces
Energy that is stored. Also called energy of position
Potential Energy
Energy of motion
Inertia
the distance an object travels in a given time
Speed
A measure of both the speed and direction of a moving object.
Velocity
What is the ability to cause changes in matter?
Energy
push or pull that causes an object to move, stop, or change direction
Force
Scientists measure weight in ____
Newtons
a force that attracts all objects towards each other
Gravity
an object's place or location
Position
What is the equation used for work?
force x distance = work
work done (or energy transferred) over time; it is a measure of how quickly someone or something does work
Power
When one force is greater than the opposite force. These forces cause a change in an object's motion.
Unbalanced Forces
when a force is applied to an object and the object moves
Work
how hard it is to slow down or stop a moving object; is changed by how fast an object is moving and how much mass that object has
Momentum
tendency of objects to remain in motion or to stay at rest unless acted upon by an outside force
Inertia
A force that opposes motion between two surfaces that are touching or when you slide one object over another
Friction
The force of repulsion (pushing away) or attraction (pulling) between poles of magnets.
Magnetism
If effort is applied and nothing moves, is work done?
No
If you see an object change its motion, what has happened to it?
A force or forces have acted on it.
What happens to an object's motion when unbalanced forces act on it?
Its motion changes
What 3 forces affect Earth and objects on Earth each day?
Friction, magnetism, and gravity
Work is measured in units called _____
Joules