A 1.04-kg binder is initially at rest on a wood desk. The binder is then pushed with a constant force of 4.2 N. Friction with a magnitude of 1.8 N is exerted on the moving
binder by the surface of the desk. Draw an energy bar chart of the situation. Then
determine the final velocity of the binder after it has been pushed 0.70 meters across
the table.

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.)