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Motion in a Straight Line — Physics STD 11 Science — Question

Gujarat BoardEnglish MediumSTD 11 SciencePhysicsMotion in a Straight Line1 Mark
Question
The engine of a train passes an electric pole with a velocity u and the last compartment of the train crosses the same pole with a velocity v. Then the velocity with which the mid-point of the train passes the pole is ______.
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Answer

The engine of a train passes an electric pole with a velocity u and the last compartment of the train crosses the same pole with a velocity v. Then the velocity with which the mid-point of the train passes the pole is $\sqrt{\frac{\text{u}_2+\text{v}_2}{2}}.$

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