# Pushing a Block: frictionless to friction

1. Oct 28, 2008

### Bones

1. The problem statement, all variables and given/known data
A hand pushes a 3 kg block along a table from point A to point C as shown in the figure below. The table has been prepared so that the left half of the table (from A to B) is frictionless. The right half (from B to C) has a non-zero coefficient of friction equal to u. The hand pushes the block from A to C using a constant force of 5 N. The block starts off at rest at point A and comes to a stop when it reaches point C. The distance from A to B is 1/2 meter and the distance form B to C is also 1/2 meter.

A) Describe in words the motion of the block as it moves from A to C.
D) Does the magnitude of the acceleration increase, decrease, or remain the same as the block moves form B to C? Explain.

2. Relevant equations[/b

3. The attempt at a solution
I am not sure how to describe the motion for part A and I put decreases ofr part D which is incorrect. Please Help!

2. Oct 28, 2008

### Bones

I think the answer to D is that it remains the same