a car accelerates with a constant acceleration of 1.2ms^-1along a straight road.how long does it take the car to accelerate from 100kph to 110kph ,and how far does it travel while doing so?
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Answer:
t=2.31s
s=67.37m
Explanation:
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Answer:
Answer ⇒ Option (c). The minimum stopping distance is same for both the cars.
Explanation ⇒ Let us take an help of the mathematical expression to derive our result.
We know that when car will be stopped then the Force of Friction acting will be the Limiting Friction.
∴ f = μmg
Now, ma = μmg
⇒ a = μg
Since, the acceleration is independent of the mass thus the minimum stopping distance will also be independent of the mass as they have the same initial speed. [Taking help of the Second Equation of motion.]
∴ Option (c). is correct answer.
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