Question

The two ends of a train moving with constant acceleration pass a certain point with velocities u and 3u the velocity with which the middle point of the train passes the same point

Answer 1

Answer:

here

$= \sqrt{ \frac{ {u}^{2} + {v}^{2} }{2} }$

velocity in the middle point is

=

$= \sqrt{ \frac{ {u}^{2} + {3u}^{2} }{2} } \\ = \sqrt{ \frac{ {4u}^{2} }{2} } \\ = \sqrt{ 2 {u}^{2} } \\ =u \sqrt{2}$

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