32 terms

Forces and Motion/Quarter 1 Material for Quiz and Final

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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
Weight
Gravitational pull on an object
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
Velocity
a measure of seed and direction
=d/t plus direction
Acceleration
the rate at which velocity changes
=Final velocity-initial velocity/t
Momentum
the force or speed with which something moves
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
Kinetic Energy
the energy an object has due to its motion
=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
Nucleus
the center of an atom. Always has a positive charge.