Q1: A cyclist brakes to a stop. His thinking distance was 1m and his braking distance was 3m. What was his overall stopping dis

Question

Q1: A cyclist brakes to a stop. His thinking distance was 1m and his braking distance was 3m. What was his overall stopping distance?

Q2: A car driver notices that there is a red light coming up. He brakes and stops in a total distance of 52 metres. If his thinking distance was 15 metres, what was his braking distance?

Q3: A car takes 76 metres to stop once a driver has noticed a hazard. If the thinking distance of the driver was 14m and the speed of the car was 8m/s how long did it take the brakes to slow the car down to a stop?

Q4: A lorry travels 28m when stopping from a speed of 4m/s. If its braking distance was 18m, what was the driver’s reaction time?

Q5: Car 1 brakes to a stop on a dry road. Car 2 does the same thing, at the same speed, on a road where it has been raining.

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Nguyệt Ánh 5 years 2021-07-30T03:33:26+00:00 1 Answers 94 views 0

Answers ( )

  1. Doris
    0
    2021-07-30T03:35:12+00:00
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    Answer:

    1.) 4m

    2.) 37 m

    3.) 62m

    4.) 2.5 s

    Explanation:

    1.) Given that the

    Thinking distance = 1m

    Breaking distance = 3m

    Stopping distance = breaking distance + thinking distance

    Stopping distance = 1 + 3 = 4m

    2.) Given that the

    Stopping distance = 52 m

    Thinking distance = 15m

    Breaking distance = 52 – 15 = 37m

    3.) The stopping distance = 76m

    Thinking distance = 14m

    Breaking distance = 76 – 14 = 62m

    It take the brakes 62m to slow the car down to a stop.

    4.) Given that a lorry travels 28m when stopping from a speed of 4m/s. If its braking distance was 18m, what was the driver’s reaction time?

    Thinking = stopping distance – braking distance

    Thinking distance = 28 – 18 = 10m

    Speed = distance/time

    4 = 10/reaction time

    Reaction time = 10/4

    Reaction time = 2.5 s

    5.) Question incomplete

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