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A body moving with an initial velocity of 1 m/s accelerates uniformly at 0.5 m/s2. Find out its velocity when it has a displacement of 48 m? A) 7 m/s B) 24 m/s C) 6 m/s D) 1 m/s

Answer»

(A) 7 m/sExplanation:Given:Initial velocity = 1 m/s (u)ACCELERATION = 0.5 m/s² (a)To find:Velocity when displacement is 48 m, so:s= 48 mV = (unknown)So, here we can use the third equation of motion which says:So, SUBSTITUTING the values, we GET;The velocity of the train when displacement is 48 metres is equal to 7m/sOption (A) is the right answer



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