The speed-time graph represents the motion of a car travelling along a straight level road. Which statement describes the motion of the car?

It accelerates and reaches a constant speed

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It accelerates and then stops moving

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It decelerates and then reaches a constant speed

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It decelerates and then stops moving

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Solution

The correct option is A It accelerates and reaches a constant speed
As we know that
Acceleration is the slope of velocity- time graph
So in the given graph the slope is constantly increasing which means that it accelerates constantly that after that the slope of the graph becomes constant which means that after some time it move with constant speed

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