A driver traveling at 40 m/s slams on his brakes the vehicle completely stops in five seconds how far to the vehicle go while stopping

Question

A driver traveling at 40 m/s slams on his brakes the vehicle completely stops in five seconds how far to the vehicle go while stopping

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Orla Orla 4 years 2021-08-15T11:29:06+00:00 2 Answers 12 views 0

Answers ( )

  1. thuhuong
    0
    2021-08-15T11:30:15+00:00
    Reply

    Answer:

    200m

    Explanation:

    Velocity = displacement/time

    V = s/t

    Given

    Velocity = 40m/s

    Time = 5 secs

    Therefore

    40 = S/5

    Cross multiply

    S = 40 x 5

    S = 200m

    The vehicle travelled 200m before stopping

  2. Amity
    0
    2021-08-15T11:30:31+00:00
    Reply

    Answer: 100 m

    Explanation:

    Initial speed(u) = 40 m/s

    Final speed(v) = 0 m/s

    Acceleration = v-u/t

    => 0-40/5

    => 8 m/s^2

    Displacement= s

    => 2as = v^2-u^2

    => 2(-8)(s) = 0 – (40)^2

    => -16s = -1600

    s = 100 m

    We can say the vehicle move 100 meters before stopping.

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