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Figure a represents the speed-time graph...

Figure a represents the speed-time graph for a particle .Find the distance covered by the particle betweent=10 min and t= 30 min .

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We draw prependicular lines from the 10 -minute point and the 30-minute point to the time-axis (figure b). The distance covered is equal to the area of the rectangle ABCD.Its value is
AB.AD =`(30 min-10min)xx(10km/h)` `h=(20)/(60)hxx10km//h`
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