a car has a kinetic energy of 432,000j when traveling at 32 meters a second, what’s the cars mass?

Question

a car has a kinetic energy of 432,000j when traveling at 32 meters a second, what’s the cars mass?

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Vodka 6 days 2021-07-22T16:20:19+00:00 1 Answers 0 views 0

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    2021-07-22T16:21:27+00:00

    Answer:843.75kg

    Explanation:

    kinetic energy(ke)=432000j

    Velocity(v)=32m/s

    Mass(m)=?

    Ke=(mxv^2)/2

    432000=(mx32^2)/2

    432000=(mx32x32)/2

    Cross multiplying we get

    432000×2=(mx1024)

    864000=1024m

    Divide both sides by 1024

    864000/1024=1024m/1024

    843.75=m

    m=843.75kg

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