physics
A baseball player pops a pitch straight up. The ball (mass 160 g) was traveling horizontally at 32.0 m/s just before contact with the bat, and 24.0 m/s just after contact. Determine the magnitude of the impulse delivered to the ball by the bat.
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The magnitude of the impulse delivered to the ball by the bat is 32.0 - 24.0 = 8.0 kg m/s. This is the change in momentum that has been delivered to the ball by the bat. Since the velocity of the ball changed from a horizontal velocity to a vertical velocity, the force must have acted in the differential direction between the two velocities.
