The power ball has now reached its highest point above the groundand starts to d

Question

The power ball has now reached its highest point above the groundand starts to descend again. The motion diagram representing thevelocity vectors is the same as that after the initial release, asshown in the figure . Indicate whether the velocity andacceleration of the ball at its highest point are positive(upward), negative, or zero. Use P, N,and Z for positive (upward), negative, andzero, respectively. Separate the letters for velocity andacceleration with a comma. The power ball has now reached its highest point above the groundand starts to descend again. The motion diagram representing thevelocity vectors is the same as that after the initial release, asshown in the figure . Indicate whether the velocity andacceleration of the ball at its highest point are positive(upward), negative, or zero. Use P, N,and Z for positive (upward), negative, andzero, respectively. Separate the letters for velocity andacceleration with a comma.
I think the velocity is zeroand the acceleration is negative

Explanation / Answer

As the power ball's velocity, it must be zero at the peak ofthe toss otherwise it would continue traveling upwards.
I think the velocity is zero and the acceleration isnegative    -And you arecorrect.

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