Two teams of nine members each engage in a tug of war. Each of the first team's members has an average mass of $69$ kg and exerts an average force of $1350$ N horizontally. Each of the second team's members has an average mass of $74$ kg and exerts an average force of $1358$ N horizontally.

$($a$)$

What is the acceleration $($in m$/$s$2$ in the direction the heavy team is pulling$)$ of the two teams?

$($b$)$

What is the tension $($in N$)$ in the section of rope between the teams?