Collisions
The type of collision where the two objects stick together and keep moving.
What is a perfectly inelastic collision?
The product of force and the time interval over which it acts.
What is impulse?
The source of centripetal force that holds a car from flying off a circular track.
What is friction?
The shape of the orbit path of the Earth around the Sun.
What is an ellipse?
The speed at which an object is moving at any given moment in a circle.
What is tangential velocity?
The type of collision where both momentum and kinetic energy are conserved.
What is perfectly elastic?
This variable must change if momentum changes but mass stays constant for an individual object.
What is velocity?
The distance traveled by an object moving in a circle, in terms of its radius.
What is 2𝝅r?
This force would be greater on you if you were on Jupiter.
What is gravity?
Change in momentum.
What is impulse?
A value that is conserved in any closed-system (frictionless) collision.
What is momentum?
Objects in collisions with the same impulse can experience different forces if this variable is changed.
What is time?
The direction that centripetal acceleration (and force) point.
What is into the center of the circle?
DAILY DOUBLE: The law of astronomy that tells us that planets move faster closer to the sun and slower further away.
What is Kepler's Second Law?
The fictitious force that pushes you outward as you move in a circle.
What is centrifugal force?
In any collision of two objects, these two values are equal and opposite on the two objects.
What are force and impulse?
The mathematical strategy/formula you use to combine x and y components of momentum (or velocity).
What is the Pythagorean Theorem?
_ = mv2/r
What is the formula for centripetal force?
The (numerical) experimentally determined value used to calculate Fg between any two objects.
What is 6.67 x 10-11 Nm2/kg2?
The time something takes to make a complete rotation.
What is the period/T?
The function used to find the angle of a vector after solving for x and y components.
What is inverse tangent?
This is a situation where a momentum of 0 kgm/s is conserved, but there is motion in multiple directions.
What is an explosion (or, also accepted, recoil/spring cart situation)?
The minimum centripetal acceleration for an object traveling in a vertical loop to complete its circle.
What is g?
The only mass that matters when calculating a period of orbit.
What is the mass of the object being orbited?
The principle that the net (mass x velocity) of all objects in a closed system cannot change.
What is conservation of momentum?