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14 November, 09:37

A 0.25 kg hockey puck is sliding along the ice with an initial velocity of 5 m/s when a player strikes it with his stick, causing it to reverse its direction and giving it a velocity of 30 m/s. The impulse the stick applies to the puck is what value?

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  1. 14 November, 11:18
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    I = Δmv = mv₁ - mv₂

    m = 0.25 kg

    v₁ = 5 m/s

    v₂ = - 30 m/s
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