a body travels along a straight line with speed 30 m/s and 60 m/s for equal intervals of time. find average speed
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A body moving along a straight line travels one third of the total distance with a speed of 3.0ms−1. The remaining distance is covered with a speed of 4.0ms−1 for half the time and 5.0ms−1 for the other half of the time. The average speed during the motion is 100
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