The momentum in this type of collision is completely conserved as long as there are no external forces.
What is linear collision
100
This is the term for the change in momentum of a system
What is recoil
100
In an elastic collision only these type of forces exist.
What is conservative forces
100
This is conserved just as well in two and three dimensional collisions as in one dimensional collisions.
What is momentum
100
Propulsion engines eject this material in order to move forward.
What is propellant mass
200
While the individual objects momentum may be changed, the momentum of this is not changed. Hint: The objects are part of this while colliding
What is the system
200
When a system retains its momentum when no external forces act on it.
What is the conservation of momentum
200
In an elastic collision, this is fully conserved.
What is total mechanical energy
200
Most collisions occur in these in _____ or _____ dimensions.
What is two and three dimensions
200
The measurable impulsive force of propellant mass flow.
What is thrust
300
An air track is used in the book's demonstration to negate what external force on the two colliding masses?
What is friction
300
The measurement of an object's inertia
What is momentum
300
In a partially elastic collision, one or more of the colliding masses are _____ during the collision.
What is warped/deformed
300
This apparatus is excellent in demonstrating friction-less two dimensional collisions.
What is a hockey table
300
The point in space where the mass of an entire system is assumed to be located.
What is the center of mass
400
The rebound of an off-center this kind of collision is always 90 degrees.
What is elastic collision
400
Momentum is defined by the product of these two factors.
What is velocity and mass
400
In a partially elastic collision, some of this type of energy from the system is lost and converted to thermal, light, sound, and other non mechanical energies during impact.
What is kinetic energy
400
For completely inelastic collisions, this is considered to be 0 degrees.
What is the rebound angle
400
Momentum is considered a ______ quantity that can be orientated in any direction.
What is vector quantity
500
Rebound angles decrease as collisions become less this. Hint, it begins with an "e" and ends with an "lastic"
What is elastic
500
This is the product of the force and the time the force is exerted on the system
What is impulse
500
In this type of collision, the two colliding masses fully stick together.
What is an inelastic collision
500
As this in one or two colliding masses increases, the collisions become more inelastic.
What is deformation
500
Mass moving in a circle has this kind of momentum. It's momentum associated with circular movement.