Circular and Periodic Motion Flashcards
The study of object moving through the air
Ballistics
The force applied to an object that causes it to move in a circle
Centripetal Force
Momentum of an object moving through a circle
Angular Momentum
Imaginary or apparent force that is equal enough opposite to the centripetal force that keeps an object moving in a circle
Centrifugal force
What is the shape of a planet’s orbit?
An Ellipse
Do the planets revolve around the sun at a constant speed?
No
Because planets revolve in ellipses, when they’re farther away, they orbit slower
Law of Ellipses
Kepler’s first law of planetary motion. Planets move in ellipses as they orbit the sun
Law of Equal Areas
As planets move a line drawn from the sun to the planet sweeps over an equal area in an equal amount of time
Law of Harmonies
The ratio of the square of a planet’s period to the cube of its distance from the sun is a constant
Movement that repeats at a regular interval
Periodic Motion
Movement between two extremes
Oscillation
A string or bar with a weight at the end that is free to swing back and forth
Pendulum
Amount an object moves in each direction around the mean position
Amplitude
One complete movement or revolution
Cycle
The process causing the oscillation to die down
Damping
