Go to the "Forces and Motion: Basics" simulation athttps://phet.colorado.edu/sims/html/forces-and-motion-basics/latest/forces-and-motion-basics_en.html.

I answered question 5 I just don't know how to solve number 6

#5) CALCULATE THE FORCE OF KINETIC FRICTION:

Setup: Remain on the "Acceleration" section. Check the box for"Mass." Uncheck "Forces" and "Sum of Forces" so you don't see labels of the magnitudes of force. Slide Friction up to some random non-zero amount.

5.1) Screenshot an image of your simulation and paste it here:

friction force >102 N 100 kg acceleration