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A body initially travelling a 10m/s is given a retardation of 2m/s for 3s find its final velocity |
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Answer» The required final velocity is 4 m/sExplanation:Given :A BODY initially travelling at 10 m/s is given a RETARDATION of 2 m/s² for 3 sTo find :the final velocitySolution :Using the first equation of MOTION, v = u + atwherev denotes the final velocityu denotes the initial velocitya denotes the accelerationt denotes the timeSubstitute, u = 10 m/sa = -2 m/s² (retardation) t = 3 sv = 10 + (-2)(3)v = 10 - 6V = 4 m/sTherefore,the required final velocity is 4 m/s |
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