1- Lonnie pitches a baseball of mass 0.20 kg. The ball arrives at home plate with a speed of 40 m/s and is batted straight back to
2- Lonnie with a return speed of 60 m/s. If the bat is in contact with the ball for 0.050 s, what is the impulse experienced by the ball?
3- A 75 kg swimmer dives horizontally off a 500 Kg raft. If the diver's speed immediately after leaving the raft is 4 m/s, what is the corresponding raft speed?