Acceleration
how speed or direction changes with time; can be positive (speeding up) or negative (slowing down) or turning a corner
Balanced Force
Net force is zero and the motion of the object does not change.
Friction
The force between objects that resists motion - always slows down motion
Newton
A measurement of force
Mass
The total amount of matter in something.
Energy
the ability to do work or cause a change
Force
push or pull; causes objects to move
Net Force
The sum of all the forces acting on an object
Gravity
A force that pulls objects together
F = m x a
Formula for Force
Distance vs Time Graph
Shows the distance an object travels in a certain amount of time.
Inertia
the tendency of a body to maintain is state of rest or uniform motion unless acted upon by an external force
Kinetic Energy
energy of motion
Velocity vs Time graph
Shows the change in speed of an object over time (acceleration).
Motion
any physical movement; change in position or place
Newton's First Law of Motion (Definition)
an object at rest will stay at rest unless acted upon by an outside force; an object in motion will stay in motion unless acted upon by an outside force
Newton's First Law of Motion (Example)
when a car suddenly stops and your head continues to move foward even though your body is stopped by the seat belt
Newton's Second Law of Motion (Definition)
the greater the force applied to an object, the greater the acceleration; the smaller the mass of an object, the greater its acceleration when force is applied; only an unbalanced force can cause objects to accelerate
Newton's Second Law of Motion (Example)
the force applied to a roller coaster car in addition to the mass of the car determines the acceleration of the car; more force = more acceleration
Newton's Third Law of Motion (Definition)
for every action there is an equal and opposite reaction; forces act in pairs
Newton's Third Law of Motion (Example)
as the thrust of a rocket pushes down on Earth's surface, the rocket launches upward into the atmosphere
Potential Energy
energy stored or energy of position
reaction force
The basketball court pushes up on Kawhi Leonard's feet.
Example of work
A monkey carries a 5 kg pineapple 10 meters in 5 minutes.
Example of velocity
Nemo swims 37 m/s South to Wallaby Way in Australia.
Speed
the distance traveled by an object in a given amount of time; rate of motion; distance/time
Example of speed
Bruce swims 58 m/s
Unbalanced Force
change speed or direction of object's motion; not equal and opposite
Velocity
speed of an object and its direction of motion; changes when speed, direction or both changes
Example of Acceleration
Crush swims side to side as he surfs at 15 m/s on the Eastern Atlantic Current.
m=f/a
formula for mass
a=f/m
formula for acceleration