Momentum Conceptual
Momentum in a system is conserved as long as this is not acting on the object.
An outside force
This is what results from an impulse being applied to an object.
Change in momentum
An egg of mass 0.02 kg is travelling at 10 m/s. What is the egg's momentum?
0.2 kg*m/s
This is the location of a uniformly dense object's center of mass.
The center of the object
What room are we in now? (letter and number)
C107
The momentum of an object can be increase if this is increased.
velocity/mass
This is the unit of impulse.
Ns
A 10 kg toy car is travelling at 3 m/s. The car then accelerates to 7.5 m/s. What is the magnitude of the impulse experienced by the car?
45 kg*m/s
This is the definition of center of mass.
The average location of the mass of an object
Who is the highest scoring basketball player of all time?
Lebron James
This is the unit of momentum.
kg*m/s
When given a graph of force during a collision over time, this is how you find the impulse experienced.
Area under the curve
A 2 kg ball of clay is thrown at a wall at 4 m/s. The ball hits the wall and comes to a complete stop after 0.002 seconds. How much force did the wall apply to the ball of clay?
4000 N
The velocity of the center of mass does not change unless acted upon by this.
An outside force
What are the first five words of the Declaration of Independence.
When in the course of...
Energy is conserved in this type of collision.
Elastic
An egg thrown at a bed sheet and does not crack. An identical egg is thrown, with the same speed, at a wall and cracks. Why does this occur?
The wall applies a force over a shorter time and so must use a larger force to get the same impulse.
A 1.5 kg block traveling at 3 m/s hits a stationary block of 2 kg. What is the velocity of the blocks after they collide and stick together?
1.28 m/s
Two carts, one of mass M and one of mass 2M are stationary on a track. A spring extends, pushing the two carts away from each other. This is the direction the center of mass will move in after the explosion.
It won't move
Name all states that share a border with Pennsylvania?
Ohio, West Virginia, Maryland, Delaware, New Jersey, New York.
The momentum of ball 1 is twice the momentum of ball 2. If ball 1 is a third the mass of ball 2, how do their velocities relate?
Ball 1 has 6 times the velocity of ball 2
A clay ball is thrown at the ground and sticks. A bouncy ball, of the same mass, is thrown at the ground and hits with the same speed. Which object experiences a greater impulse and why?
The bouncy ball because it has a larger change in momentum.
Two bumper cars of 40 kg are moving towards each other. Car A is traveling at 3 m/s and Car B is travelling at -2.3 m/s. After the collision, Car A is travelling at -0.45 m/s. What is the final speed of Car B? What type of collision is this?
1.15 m/s. Inelastic.
A bar has a length of "L". The bar has a linear density that varies as 3x2. The bar's far left end is at the origin (x=0). In terms of "L", where is the center of mass of the object?
3/4 L
Place the following events in chronological order from earliest to latest.
Jupiter is discovered, The New Deal is signed, Signing of the Magna Carta, Lincoln is elected president, Galileo is born.
Magna Carta (1215), Galileo (1564), Jupiter (1610), Lincoln president (1861), New Deal (1933)