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Question

Four cars A, B, C and D are moving on a levelled road. Their distance versus time graph is shown in the figure. Choose the correct statement.​

A

Car A is faster than car D.​
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B

Car D is faster than car C.​
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C

Car B is the slowest.​
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D

Car C is the slowest.​
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Solution

The correct option is C
Car B is the slowest.​
The distance travelled by car A, B, C, and D in 't' seconds are marked as dA, dB, dC, and dD on the distance-time graph.
Here,
dC>dD >dA >dB

We know that, the distance travelled per unit time is defined as the speed. Here in the given time 't', the distance travelled by the car B is dB which is the least among the distance travelled by other cars in the same time.
Thus, the speed of the car B is the least among all cars. So it is the slowest among all.

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