A body of mass 'M' is moving with a velocity 'v'. It makes a one dimensional head on elastic collision with a stationary body of same mass. They are in contact for a very small time 'Δt'. The contact force between them varies as shown in the figure. Find the magnitude of \(\rm \overline F_{\max} \).
1
\(\frac{{mv}}{{7\Delta t}}\)
2
\(\frac{{8mv}}{{7\Delta t}}\)
3
\(\frac{{7mv}}{{8\Delta t}}\)
4
\(\frac{{mv}}{{8\Delta t}}\)