Variables and Quantities
The variable used to symbolize momentum.
What is P?
In this situation, objects stick together after colliding.
What is a completely inelastic collision?
The direction that angular velocity points.
What is the z-direction?
Write a proof demonstrating Newton's 2nd Law in terms of momentum.
F=ma
F=m(dv/dt)
F=d/dt(mv)
F=d/dt(p)
F=dp/dt
The Greek letter symbolizing angular displacement.
What is theta?
The amount of momentum in two identical objects, set to collide head on with the same speed.
What is 0 kg*m/s?
The rule used to determine the sign on omega.
An object's momentum is described as (9kg*m/s)i-(16kg*m/s)j. What direction is the momentum vector pointing? (Give answer as a positive angle).
A dimensionless quantity used in rotation/circular motion.
What is a radian?
Both inelastic and elastic collisions obey this principle.
What is the conservation of momentum?
The quantity responsible for changing velocity's direction in circular motion.
56 m/s
The lowercase Greek letter used to denote angular velocity.
What is omega?
A requirement for any collision to be inelastic.
What is a loss in kinetic energy?
This value is the same for all points on a rotating rigid body.
What is omega/angular velocity?
What is the ratio of kinetic energy after to kinetic energy before a completely inelastic collision between an object of m= 120kg v= 19 m/s and another object of m= 400kg v= 3 m/s?
0.49
The amount of radians in 1 full rotation.
What is 2pi?
This quantity is 0 when momentum is conserved.
What is impulse?
This equation says that as a point moves farther away from the center of a rotating rigid body, it speeds up.
What is v=omega*r?
A bullet is shot at a hanging block of wood. The block catches the bullet and swings upwards by some displacement of y. What expression will give you the bullet's initial velocity?
V1=[(mb+mw)/mb]*sqrt(2gy)