posted by physics
A 2.0 kg mass starts from rest and slides down an inclined plane 8.0 X 10^-1 m long in .50s. what net force is acting on the mass along the incline.
I have no idea how to do this
I don't know why they just didn't say .8m
the back of the book says 13 N down the incline
I can determine the mg with 9.81 m/s^2 and get 20 N but have no idea how to get the other forces