The motion of an airplane is represented by velocity-time graph as...

The motion of an airplane is represented by velocity-time graph as shown below. The distance covered by airplane in the first 30.5 second is _______ km .

Options

A $12$
B $3$
C $6$
D $9$

Correct answer

A. $12$

Step-by-step solution

Distance = area under the graph

\begin{aligned} d & =300 \times 2+400 \times 28.5 \\ & =600+114000 \\ & =12000 \mathrm{~m} \end{aligned}

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