A classical mechanics problem by Rishabh Deep Singh

A uniform block $A$ of length 6m and width 3m is hinged at $C$ and is supported by a small block shown in the figure above.

A constant force $F = 400\text{ N}$ is applied to the block $B$ horizontally.

What is the spped of $B$ after it move 1.5m?

Take the mass of block $A$ and $B$ to be 25 kg and 2.5 kg respectively. And take the coefficient of friction between all contact surface be 0.3.

With $g = 10\text{ m/s}^2$ .