1) A basketball is thrown into the basket.  The ball leaves the player's hand at t = 0 and reaches the basket at t = 3s.  Which best represents the ball's kinetic energy as a function of time?

2) Work is measured in what unit?
  a) Newtons
  b) Joules
  c) meters/second
  d) Watts

3) What is the minimum power developed by a 75 kg person who climbs a set of stairs 4.5 m high in 5.0 s?

4) A 3.5 kg projectile was launched vertically at 75 m/s.  The projectile reached a maximum height of 180 m.  How much energy was lost to heart while the projectile was rising?

5) A 50 kg crate is pulled 40m along a horizontal floor by a constant force exerted by a person, F_p = 100 N, which acts at a 37^o angle above the horizontal.  The floor exerts a friction force F_f = 50 N.  Determine:

6) A 5.20 kg block sliding at 9.40 m/s across a horizontal frictionless surface collides head on with a stationary 8.60 kg block.   The 5.20 kg block rebounds at 1.80 m/s.  How much kinetic energy is lost during the collision?