when a car driver travelling at a speed of 10 m\s applies brakes and brings the car to rest in 20 s, then the retardation will be:

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when a car driver travelling at a speed of 10 m\s applies brakes and brings the car to rest in 20 s, then the retardation will be:
A) + 2m\s2
B) – 2 m\s2
C) – 0.5 m\s2
D) + 0.5 m\s2​

1 thought on “when a car driver travelling at a speed of 10 m\s applies brakes and brings the car to rest in 20 s, then the retardation will be:”

  1. Answer: (D) + 0.5 m/s2

    Step-By-Step Explanation:

    U (initial velocity) = 10 m/s  

    V (final velocity) = 0 m/s  

    t (time taken) = 20s  

    a (acceleration) = (V – U) / t  

    a = 0 – 10 / 20  

    a = – 0.5 m/s2  

    Retardation = 0.5 m/s2

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