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4 November, 10:59

A 1000 kg car traveling 20 m/s east experiences an impulse of 2000 Ns west. What is the final velocity of the car after the impulse has been applied?

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  1. 4 November, 11:10
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    V=18 m/s

    Explanation:

    Impulse is represented by Δp. It can be expanded such as: Δp = m (v-u), where m is mass, v is final velocity, and u is initial velocity. (sorry ib physics things)

    You can substitute your given values into the equation.

    Δp = - 2000 (i kept this as negative since it is going the opposite direction to your initial velocity)

    m = 1000 kg

    u = 20 m/s

    1. - 2000 = 1000 (v-20) - -> - 2000/1000

    2. - 2 = v-20 - -> - 2 + 20

    3. v = 18 m/s

    You can always double check your answer by substituting it back into the original equation to make sure the Δp = - 2000
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