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A train starting from rest attains a velocity of 20 m/s in 2 minutes. Assuming that the acceleration is uniform, find 1)the acceleration 2)distance travelled by the train, while it attained this velocity? |
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Answer» -Velocity = 20m/sTime = 2 minsTo Find :-AccelerationDistance traveled while it attained velocitySolution :-(i)We know that Acceleration = v - u/tHere, u = OV = 20t = 2min = 120secSubstituting in Formula :-A = 20 - 0/120A = 20/120Acceleration = 1/6 m/s²-----------------(II)Using 2nd Law of motion,s = ut + 1/2at²Here,s = distance a = 1/6u = 0t = 120Substituting in formula :-s = 0 X 120 + 1/2 x 1/6 x 120²s = 0 + 1/12 x 14400Distance = 1200m |
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