1. Mr. Sherred Physics YourName

2.  An object’s momentum depends on two things 1. Its mass 2. Its velocity The symbol for momentum is a lowercase p Momentum is a vector quantity (direction matters)

3. The equation for momentum is p = mv Move the letters in the correct places in the triangle below p m v Momentum’s units are kg(m/s) or kgm/s

4. 1. How much momentum would a 2 kg block have if it is going 4 m/s? Answer: 2. An object has 12 kgm/s of momentum. How fast is it traveling if its mass is 6 kg? Answer: 3. An object has 20 kgm/s of momentum. What is its mass if it is traveling 5 m/s? 1. Answer:

5.  Momentum is also always conserved.  The law of conservation of energy states, “In the absence of a net external force, the momentum of an object or system of objects is unchanged”  Momentum before interaction is the same as after the interaction.

6.  For this class, all problems about momentum will be about linear momentum, which means any collisions will happen along a perfectly straight line, which simplifies things a lot.  For this class (and on the MCAS) in any collision the objects will either stick together or bounce off of each other, but they will always stay on the same line.

7.  Explain your answer here:

9.  Example, a very heavy metal ball going pretty slow hits a very light plastic ball. For momentum to be conserved, the plastic ball has to travel faster than the metal ball to make sure that the product of mass and velocity remains the same. heavy/slowlight/fast

10.  A light, very fast plastic ball moving to the right hits a much heavier metal ball.

11.  A metal ball going fast and to the left hits a stationary metal ball that is standing still

12.  A bumper car with a very big guy in it hits an empty car standing still. The guy is moving to the right.

13.  A light plastic ball going to the left very fast hits a stationary plastic ball that is sitting still and covered in glue. The two balls stick together and continue moving.