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A train starting from a railway station and moving with uniform acceleration attains speed 40 kilometre per hour in minutes find the it acceleration

Answer»

:Initial VELOCITY = zeroFinal velocity = 40 km/hTime of journey = 1 minuteWe have to find acceleration of the train★ Acceleration is defined as the rate of CHANGE of velocity.Mathematically, a = v - u / ta denotes accelerationv denotes final velocityu denotes initial velocityt denotes timeIt is a vector quantity having both magnitude as well as direction.It can be POSITIVE, negative or zero.SI unit : m/s²★ Conversion :• 1 km/h = 5/18 m/s• 40 km/h = 40 × 5/18 = 11.11 m/sTime : 1 min = 60 s➝ a = v - u / t➝ a = 11.11 - 0 / 60➝ a = 11.11/60➝ a = 0.18 m/s²



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