CBSE Class 11-science Answered
The 2 ends of train ,moving with a constant acceleration,pass a certain with velocity u and v .Show that velocity with which the middle point of train passes the same point is root of(usquare +v square)/2
Asked by ajaysekharjs | 27 Aug, 2018, 11:54: AM
Expert Answer
Using the equation of kinematics for velocities, acceleration and displacement,
At the velocity at the mid-point of the train is vm
and that can be found using the same kinematical equation.
At the midpoint, the 'u' is zero and the displacement made is,
sm , such that sm = s/2.
Using equation (a) and (b)
Hence it is proved that the velocity of a train at its midpoint is the square root of half of the difference of the squares of their final and initial velocity.
Answered by Abhijeet Mishra | 28 Aug, 2018, 02:28: PM
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