32 terms

Friction

a force that opposes motion

Centripetal force

force that pushes an object into a circular path

Force

Mass x Acceleration a push or pull

Inertia

the tendency of a moving object to keep moving and the tendency of an object at rest to stay at rest

Mass

amount of matter in an object

measured with balance, gram

measured with balance, gram

Weight

Gravitational pull on an object

mass x 9.8, Newtons

mass x 9.8, Newtons

G-Force

the force supplied by Earth's gravity

Centrifugal force

an apparent force that pushes away from the center

Gravity

(physics) the force of attraction between all masses in the universe

Speed

a measure of how fast an object moves

=d/t

=d/t

Velocity

a measure of seed and direction

=d/t plus direction

=d/t plus direction

Acceleration

the rate at which velocity changes

=Final velocity-initial velocity/t

=Final velocity-initial velocity/t

Momentum

the force or speed with which something moves

Mass x velocity

Mass x velocity

Average Speed

a rate of motion determined by dividing the total distance traveled by the total travel time

Energy

the ability to do work

Elastic Potential Energy

energy from an object that is stretched or compressed to increase/decrease the distance of its parts

Gravitational Potential Energy

object's stored energy due to its position

=mgh

=mgh

Kinetic Energy

the energy an object has due to its motion

=1/2mv squared

=1/2mv squared

Conservation of Energy

energy can't be created or destroyed

Newton's 1st Law

an object at rest or in motion will stay at rest or in motion unless acted on by an outside force

Newton's 2nd Law

Acceleration of an object increases as the amount of force increases

Newton's 3rd Law

Every action has an equal and opposite reaction force

Newton

unit of force

Joule

unit of energy

Acceleration due to gravity

9.8m/s squared

Efficiency

work input to work output

Electron

negatively charged subatomic particle located outside the nucleus

Proton

positively charged subatomic particle found in the nucleus

Neutron

no charge, found in the nucleus

Length

straight line distance between 2 points

Volume

space an object takes up

liters

liters

Nucleus

the center of an atom. Always has a positive charge.