Forces on adjacent accelerating bodies

[subzero800]

Homework Statement

The same force that gives the standard 1 kg mass an acceleration of 1.00 m/s2 acts first on body A, producing an acceleration of 0.640 m/s2, and then on body B, producing an acceleration of 0.359 m/s2. Find the acceleration produced when A and B are attached and the same force is applied.

Homework Equations

ƩF=ma

The Attempt at a Solution

I started by trying to figure out the mass of body a by doing 1 N/.640 m/s² and I have 1.5625 Kg for Body A--I'm not sure if this is correct nor how to complete the problem.

 

[Doc Al]

I started by trying to figure out the mass of body a by doing 1 N/.640 m/s² and I have 1.5625 Kg for Body A--I'm not sure if this is correct nor how to complete the problem.

So far, so good. You found the mass of body A. Now find the mass of Body B.