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18 Cards in this Set

  • Front
  • Back
Periodic motion
swinging back and forth like a pendulum in a grandfather clock
Circular motion
swinging in a circle
Vibrational motion
vibrating (moving back and forth quickly)
Average speed
how far an object goes in a certain amount of time (speed = distance / time)
Point of reference
a place you are observing the motion from (seeing a car move while in it versus on the side of the road watching it)
Velocity
speed and direction (40mph south)
Force
push or pull
Magnitude
size of force
Direction
way the force is acting
Gravitational force
force that every object exerts on every other object
Magnetic force
push or pull from a magnet
Electric force
push or pull from electrically charged objects
Friction
force that resists movement when two objects are rubbed together
Work
force moves an object a certain distance
Speed equals
distance divided by time
Gravity pulls objects toward
Earth's center
Weight is
the amount of gravity on an object
Work equals
force times distance