An engine of a train, moving with uniform acceleration, passes the signal-post with velocity u and the last compartment with velocity v. The velocity with which middle point of the train passes the signal post is :
1
\(\frac{u+v}{2}\)
2
\(\frac{v-u}{2}\)
3
\(\sqrt{\frac{v^2+u^2}{2}}\)
4
More than one of the above
5
None of the above