Two forces FA and FB are applied to an object whose mass is 10.4 kg. The larger force is FA. When both forces point due east, the object's acceleration has a magnitude of 0.503 m/s2. However, when FA points due east and FB points due west, the acceleration is 0.287 m/s2, due east. Find (a) the magnitude of FA and (b) the magnitude of FB.

On a horizontal frictionless surface, a small block with mass 0.200 kg has a collision with a block of mass 0.400 kg. immediately after the collision, the 0.200 kg block is moving at 12.0 m/s in the direction 30° north of east and the 0.400 kg block is moving at 11.2 m/s in the direction 53.1° south of east. use coordinates where the +x-axis is east and the +y-axis is north.(a) what is the total kinetic energy of the two blocks after the collision (in ) what is the x-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your ) what is the y-component of the total momentum of the two blocks after the collision? (indicate the direction with the sign of your answer.)