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Force
Free Body Diagrams
C
D
E
100
This is the background or point that appears stationary and is used for comparison when motion is described.
What is a frame of reference?
100
A football is moving upwards toward its peak after having been booted by the punter. What force is acting on the ball?
Gravity
100
Slippery substances like grease, that reduce friction.
What are lubricants?
100
Comparison of work output to work input.
What is efficiency?
100
A change in position.
What is motion?
200
A push or a pull.
What is a force?
200
Force x distance
What is work?
200
The most common frame of reference.
What is the Earth?
200
The rate at which an object moves. It can be calculated by dividing distance by time.
What is speed?
200
Force of attraction responsible for accelerating an object toward the Earth.
What is gravity?
300
Speed in a given direction.
What is velocity?
300
A object at rest will stay at rest and an object in motion will remain in motion unless acted on by an unbalanced force.
What is Newton's 1st law or Inertia?
300
Shows how force, mass, and acceleration are related. F = m x a
What is Newton's 2nd law of motion?
300
The ability to do work.
What is energy?
300
Energy of motion.
What is kinetic energy?
400
This determines how difficult is is to stop an object's motion. It can be calculated by multiplying mass x velocity.
What is momentum?
400
The unit used to measure force.
What is a Newton?
400
An instrument that makes work easier.
What is a machine?
400
This can be speeding up, slowing down, or changing direction.
What is acceleration?
400
Stored energy.
What is potential energy?
500
Two things that gravity is dependent on.
What is the mass and distance between objects?
500
A force that acts in the opposite direction of motion. It slows things down.
What is friction.
500
A negative acceleration.
What is deceleration?
500
States that energy can't be created or destroyed. It only changes form through conversions or transformations.
What is the law of conservation of energy.