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,anddD 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.