Question

# A driver of a car travelling at km applies the brakes and accelerates uniformly in the opposite direction. The car stops in s. Another driver going at km in another car applies his brakes slowly and stops in s. On the same graph paper, plot the speed versus time graphs for the two cars. Which of the two cars travelled farther after the brakes were applied?

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Updated on : 2022-09-05
Solution
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## (A)   :         Initial speed of the car A                     The car stops in 5 seconds        i.e      at  (A)   :         Initial speed of the car A                         The car stops in 10 seconds        i.e      at  With the help of these initial and final points for both the cases,  we can plot the graph of speed vs time.Area under the speed-time graph gives the distance covered.   Distance covered by car A       m   Distance covered by car A       m Thus car A travels more distance than B.

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