Compare the collision between two baseballs and a catcher's mitt. 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 backwards 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
backwards 30 cm as the ball strikes the mitt.
Case A
Case B
Before
After
Before
After
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Which variable is different for these two cases?
Which Case involves the greatest momentum change?
Which Case involves the greatest impulse?
Which Case involves the greatest force ?
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