Answer: i got you
Step-by-step explanation:
In Case A, when a baseball pitched at 40 m/s collides with a catcher's mitt and is brought to a stop, the collision is considered inelastic because the catcher holds the mitt rather rigidly and retracts backwards very little as the ball strikes the mitt. As a result, the majority of the kinetic energy of the baseball is converted into thermal energy and the baseball is deformed. The catcher's mitt also experiences some deformation, but the energy absorbed by the mitt is relatively less than the energy absorbed by the baseball.
In Case B, when an identical baseball pitched at 40 m/s collides with a catcher's mitt and is brought to a stop, the collision is considered elastic because the catcher holds the mitt with a relaxed arm and retracts backwards 30 cm as the ball strikes the mitt. The kinetic energy of the baseball is converted into elastic potential energy in the mitt and the baseball does not experience significant deformation. The mitt also does not experience significant deformation.
In summary, when a baseball is caught with a rigid mitt, the collision is inelastic and the baseball is deformed, while when a baseball is caught with a relaxed mitt, the collision is elastic and the baseball does not experience significant deformation.