A 100 N block sits on a rough horizontal floor. The coefficient of sliding friction between the block and the floor is 0.250. A horiztontal force of 90.0 N acts on the block for 3.00 seconds. Calculate the velocity of the block after 3.00 seconds if it starts from rest.
How would this diagram look and what formula do I use?

Question

A 100 N block sits on a rough horizontal floor. The coefficient of sliding friction between the block and the floor is 0.250. A horiztontal force of 90.0 N acts on the block for 3.00 seconds. Calculate the velocity of the block after 3.00 seconds if it starts from rest. 
How would this diagram look and what formula do I use?

matt101 · Answer

You can figure out the diagram just by thinking about the forces acting on the block.

What forces are acting on the block (HINT: there are 4)?

anonymous · Answer

Aren't the only forces acting on the block the sliding friction and the horizontal force...?

irishboy123 · Answer

in the horizontal, yes, but look at the vertical direction too, and draw it all.