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

Question

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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Khoii Minh 6 months 2021-07-31T04:16:55+00:00 1 Answers 24 views 0

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    2021-07-31T04:18:21+00:00

    Answer:

    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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