A car is traveling at 33.2 m/s. If the car has a kinetic energy of 688,900 J, what is the car’s mass?​

Question

A car is traveling at 33.2 m/s. If the car has a kinetic energy of 688,900 J, what is the car’s mass?​

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Gerda 1 year 2021-09-01T13:39:47+00:00 2 Answers 3 views 0

Answers ( )

  1. Sigrid
    0
    2021-09-01T13:41:12+00:00
    Reply

    Answer:

    1250kg

    Explanation:

    [tex]\frac{688900}{33.2\\^{2} }[/tex] = 625

    [tex]\frac{1}{2} m = 625[/tex]

    625 x 2 = 1250

  2. thongdat2
    0
    2021-09-01T13:41:41+00:00
    Reply

    Answer:1250kg

    Explanation:

    Kinetic energy(ke)=688900j

    Velocity(v)=33.2m/s

    Mass(m)=?

    ke=(mv^2)/2

    688900=(mx(33.2)^2)/2

    688900×2=mx1102.24

    1377800=mx1102.24

    m=1377800/1102.24

    m=1250kg

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