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CBSE Class 9 Answered

A train moving with a uniform speed covers a distance of 1200 m in 20 s. Calculate (i) the velocity of the train (ii) the time taken to cover 3000 m.
Asked by Topperlearning User | 10 Jun, 2016, 09:57: AM
answered-by-expert Expert Answer

Distance covered = 1200 m

Time taken =20 s.

 (i) begin mathsize 12px style Velocity space equals fraction numerator 1200 straight m over denominator 20 space straight s end fraction end style
                 = 60 m s-1

   → Velocity of train is 60 m s-1.
(ii) begin mathsize 12px style Time space taken space to space cover space 3000 space straight m equals fraction numerator Distance over denominator Velocity space of space the space train end fraction rightwards arrow space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space space equals fraction numerator 3000 space straight m over denominator 60 space straight m divided by straight s end fraction equals 50 space straight s end style

     →Time taken to cover 3000 m is 50 s.

Answered by | 10 Jun, 2016, 11:57: AM

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