Now suppose that a ball is thrown upward from the base of the building at a starting speed of 29.4 m/s . On the way up its acceleration ( or deceleration , if you wish ) would be 9.8 m/s*( *= 2 ) ,just as it was on the way down , except that now the acceleration is downnwardly directed while the speed is upward . Because the acceleration is the same whether the object is moving up or down , the figure could just as well represent the person at the bottom throwing the ball upward.

In this latter case , what would be the speed of the ball when it reaches the top?__________

Answer: 0 m/s

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