You toss a ball straight upward, in a positive direction. The ball falls freely under the influence of gravity. At the highest point in the ball's motion. A.) its velocity is zero and its acceleration is positive (upward).

B.) its velocity is zero and its acceleration is negative (downward).

C.) its velocity is positive (upward) and its acceleration is zero.

D.) its velocity is zero and its acceleration is zero.

At the highest point in the ball's motion,  its velocity is zero and its acceleration is negative (downward).

All objects within the earth's gravitational field are affected by the force of gravity. Gravity is the reason why objects fall to the ground when they are thrown upwards.

If you toss a ball upward, the ball will fall freely under the influence of gravity. At the highest point in the ball's motion,  its velocity is zero and its acceleration is negative (downward).

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B.) its velocity is zero and its acceleration is negative (downward).

Explanation:

When the ball is thrown upwards in the air, the ball starts with its velocity being high and positive upwards against the force of gravity. Due to force of gravity pulling the object to the center of the earth, its velocity decreases as it reaches the maximum height where the velocity is instantaneously zero. At this maximum height its acceleration is -9.81 m/s².

neither accurate nor precise.

if the person is shown to have +90n, then ans is -10n.

if the person is shown to have -90n, then ans is +10n.