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a kid throws a ball up with some initial speed comment on magnitude and sign of acceleration and velocity of ball |
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Answer» lose up a ball with some initial speed.Let the initial velocity be u .Also, let's consider downwards VECTOR be negative.Now, we KNOW that GRAVITATIONAL acceleration is directed towards the earth (i.e. downwards).Hence, sign of acceleration (a) is -g.Now, for velocity vector, since initial velocity is directed upwards, its sign will be positive.Hope It HELPS. |
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