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A particle moves in straight line with velocity 6 m/s and3 m/s for time intervals which are in ratio 1:2. Findaverage velocity.(a) 2 m/s (6) 3 m/s (c) 4 m/s(d) 5 m/s |
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Answer» Answer: Key Idea average velocity and instantaneous VELOCITIES have same value in a uniform motion. Average velocity is that uniform velocity with which the object will cover the same displacement in same interval of time as it does with actual VARIABLE velocity during that time interval. =(3m/s×20s)+(4m/s×20s)+(5m/s×20s) =(60+80+100)−240m Total time taken =20+20+20 =60s ∴ Average velocity = 60 240 =4m/s Explanation: MARK as brainliest |
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