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physics

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6. A 1580 kg car is traveling with a speed of 15.0 m/s. What is the magnitude of the horizontal net force that is required to bring the car to a halt in a distance of 50.0 m?

  • physics -

    Kinetic energy of moving vehicle
    =(1/2)mv²
    =(1/2)1580*15²
    =177750 J
    Work done by braking force, F
    =F.d
    =50F
    Equate energies:
    50F=177750J
    F=177750/50 N
    =3555N

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