The velocity-time graph of a car moving on a straight road is shown. Find the distance travelled by the car after the brakes are applied :

20 m

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40 m

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60 m

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80 m

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Solution

The correct option is D $80 m$
Distance travelled after brakes are applied $=$ Area of triangle CBD $=$ $\frac{1}{2} \times C D \times B D$ $=$ $\frac{1}{2} \times (13 - 5) \times 20$ $= 80 m$

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The velocity-time graph of a car moving on a straight road is shown. Find the distance travelled by the car after the brakes are applied :

The correct option is D 80mDistance travelled after brakes are applied = Area of triangle CBD = 12×CD×BD = 12×(13−5)×20 =80m

The correct option is D $80 m$
Distance travelled after brakes are applied $=$ Area of triangle CBD $=$ $\frac{1}{2} \times C D \times B D$ $=$ $\frac{1}{2} \times (13 - 5) \times 20$ $= 80 m$