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19 February, 20:00

In jumping to block a shot, a volleyball player with a weight of 600 N generates an average vertical ground reaction force of 900 N for 0.37 seconds. What is the net vertical impulse that causes her velocity to increase in the upward direction?

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  1. 19 February, 21:45
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    111 N

    Explanation:

    weight (downwards) = 600 N

    reaction force (upwards) = 900 N

    t = 0.37 s

    Net force

    F = reaction force - weight = 900 - 600 = 300 N

    Impulse = force x time = 300 x 0.37 = 111 N
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