The maximum "$F$" which will not cause motion of any of the blocks $............\,N$
data insufficient
$15$
$10$
None
The acceleration of $10\,kg$ block when $F =30\,N$
The maximum acceleration of $5\,kg$ block $.............\,m/s^{2}$
Block $B$ moves to the right with a constant velocity $v_0$. The velocity of body $A$ relative to $B$ is: