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an aeroplane on a Runway starts from rest and picks up a velocity of 180 km/hour and takes off. In doing so, it covers a Runway of 1.5 km. calculate (i) the uniform acceleration acting on the aeroplane and (ii) the time in which it takes off. |
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Answer» Answer: uniform acceleration is 1.66m/s^2 time taken is 30s Explaination : velocity = 180Km/ HR = 50 m/s DISPLACEMENT = 1.5Km = 1500M Velocity = change in displacement (ds) _________________________ time (t) t= ds/v = 1500÷50 t = 30s = 0.00833hr acceleration = change in velocity / time = 50 / 30 = 1.66 m/s^2 |
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