Case A: A baseball pitched at 40 m/s collides with a catcher's mitt and is brought to a stop. The catcher holds the mitt rather rigidly and retracts backward very little as the ball strikes the mitt.
Case B: An identical baseball pitched at 40 m/s collides with a catcher's mitt and is brought to a stop. The catcher holds the mitt with a relaxed arm and retracts backward 30 cm as the ball strikes the mitt.
Which variable is different for these two cases?
a) Velocity
b) Time
c) Acceleration
d) Mass
Which case involves the greatest momentum change?
a) Case A
b) Case B
Which case involves the greatest impulse?
a) Case A
b) Case B
Which case involves the greatest force?
a) Case A
b) Case B
