SSC
PHYSICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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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:
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+ 2 m/s2
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-2 m/s2
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-0.5 m/s2
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+ 0.5 m/s2
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Explanation:
Detailed explanation-1: -The acceleration or restardation =-2m/s²
Detailed explanation-2: -In the given case, when the driver applies brakes on a moving car, it changes the car’s speed by slowing it down.
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