a motorcar is moving with a velocity of 108 km / h and it takes 4s to stop after the brakes are applied calculate the force exerted by the b

Question

a motorcar is moving with a velocity of 108 km / h and it takes 4s to stop after the brakes are applied calculate the force exerted by the brakes on the motorcar if it’s mass along with the passengers is 1000 kg​

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Latifah 4 years 2021-08-28T06:02:07+00:00 2 Answers 14 views 0

Answers ( )

  1. hongcuc2
    0
    2021-08-28T06:03:11+00:00
    Reply

    Answer:

    -7500 N

    Explanation:

    v₀ = 108 km/h = 30 m/s

    v = 0 m/s

    t = 4 s

    a = Δv / Δt

    a = (0 m/s − 30 m/s) / 4 s

    a = -7.5 m/s²

    F = ma

    F = (1000 kg) (-7.5 m/s²)

    F = -7500 N

  2. Dulcie
    0
    2021-08-28T06:03:20+00:00
    Reply

    Answer:-7500

    Explanation v₀ = 108 km/h = 30 m/s

    v = 0 m/s

    t = 4 s

    a = Δv / Δt

    a = (0 m/s − 30 m/s) / 4 s

    a = -7.5 m/s²

    F = ma

    F = (1000 kg) (-7.5 m/s²)

    F = -7500 N

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