$A$ player throws a ball upwards with an initial speed of $29.4\; m s^{-1}$. What are the velocity and acceleration of the ball at the highest point of its motion?
- A$0\; m s^{-1}, 9.8\; m s^{-2}$
- B$29.4\; m s^{-1}, 9.8\; m s^{-2}$
- C$0\; m s^{-1}, 0\; m s^{-2}$
- D$29.4\; m s^{-1}, 0\; m s^{-2}$
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