1.    An 85 kg Mock runs at 10 mph.  What's his momentum?

2.    A 1000 kg car comes to a stop from 60 mph and .004 seconds.  What is the force felt during the crash?

3.     Is it better for the car from #2 to come to a stop or to bounce backward away from the wall?  (justify your answer)

4.    Two identical cars mounted on a track bump into each other.  Their speeds are +4 meters per second and -6 meters per second.  After the collision, the +4 car is now going at -4 meters per second.  What is the other car doing?

5.    Two chunks of clay slide along a frictionless surface and collide at 90 degrees.  If their speeds are the same and one chunk is 3 times heavier than the other chunk, at what angle does the combined mass move?  (give answer in degrees from original path of heavier chunk).

6.    If a 50 kg rocket is launched and burns 2 kg of fuel per second, what is its initial acceleration?

7.    If I am can currently hold up a maximum of 40 pounds as shown, then how many pounds could I hold up if my bicep were instead attached at point B?

8.    Billy Joe Bob is a big boy.  He sits on a seesaw, halfway between the fulcrum and the end of board.  Where does his friend Ed (who is only 3/4 of Bob's weight) have to sit on his side to balance Bob?

9.    E.C.    A metal bullet and a rubber bullet are shot at a wooden block.  Tell which one is more likely to knock the block over and why.

Good luck students!  From Shawn :)