A baseball is thrown from the outfield toward the catcher. When theball reaches

Question

A baseball is thrown from the outfield toward the catcher. When theball reaches its highest point, which statement is true?
1 Its velocity is not zero, but itsacceleration is zero.
Its velocity and its acceleration are bothzero.
Its velocity is perpendicular to itsacceleration.
Its acceleration depends on the angle atwhich the ball was thrown.
None of the above statements aretrue.
1 Its velocity is not zero, but itsacceleration is zero.
Its velocity and its acceleration are bothzero.
Its velocity is perpendicular to itsacceleration.
Its acceleration depends on the angle atwhich the ball was thrown.
None of the above statements aretrue.
1 Its velocity is not zero, but itsacceleration is zero.
Its velocity and its acceleration are bothzero.
Its velocity is perpendicular to itsacceleration.
Its acceleration depends on the angle atwhich the ball was thrown.
None of the above statements aretrue.
1

Explanation / Answer

After the ball is thrown it's acceleration is always downwardand equal to g = 9.8 m/s2 At the top of the trajectory its velocity is parallel to theground and perpendicular to the acceleration a. So the middle statement is true. At the top of the trajectory its velocity is parallel to theground and perpendicular to the acceleration a. So the middle statement is true.

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