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A train of length 450m travels with the speed of 50 m/s. The train crosses a man running in the same direction as the train in 10s. Find the speed of the man.1. 4 m/s2. 6 m/s3. 5 m/s4. 5.5 m/s5. 4.5 m/s |
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Answer» Correct Answer - Option 3 : 5 m/s Given: Length of the train = 450m Speed of the train = 50 m/s Time taken to cross the man = 10 seconds Formula used: Speed(S) = Distance(D)/Time(T) Calculation: Let the speed of the man be x m/s Speed at which train crossed the man = 450/10 m/s ⇒ 45m/s In the same direction, the speed subtracts ⇒ (50 – x) m/s = 45 m/s ⇒ x = 5 m/s ∴ The speed of the man is 5 m/s. |
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