1) A puck sliding on a frictionless surface undergoes a change in momentum due to a constant force.  Which of the following expressions could be used to determine the change in momentum?
  a) Fd
  b) Ft
  c) Fv
  d) F(v/t)

2) Two carts collide while travelling on a smooth surface.  The sum of the kinetic energies is the same before as after.  This collision must be:
  a) elastic
  b) inelastic
  c) between carts of identical mass
  d) between carts of that stick together

3) A 0.15 kg ball moving at 40 m/s is struck by a bat.   The bat reverses the ball's direction and gives it a speed of 50 m/s.  What average force does the bat apply to the ball if they are in contact for 6.0 X 10^-3 s?

4) In order to stop two sliding objects the greater impulse must be given to the one having greater:
  a) mass
  b) speed
  c) velocity
  d) Ns

5) An object sliding to the right breaks into two pieces.   The momentum of fragment 1 after the explosion is 23 kgm/s. Find  P_2.

6) Which set of conditions is true for all inelastic collisions?

7) A 2.0 kg puck travelling due east at 2.5 m/s collides with a 1.0 kg puck travelling due south at 3.0 m/s.  The stick together on impact.  What is the resultant direction of the combined pucks?

8) A 0.15 kg ball rolls off an edge at 2.4 m/s as shown.  What is the vertical component of the ball's momentum when it strikes the floor 0.85 m below?

kgm/s