Question

The position-time graph for a tennis ball thrown vertically upwards from the second floor of a school building is shown below.ignore all effects of air friction.The height of the second floor is 6,5m.The ball rises 0,9 m from the point of projection before it starts to fall to the ground. Write down the magnitude and direction of the accelaration of the ball while it is moving upwards
9,8m.s/2upward

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