You apply a 2 Newton force to a 0.5 kilogram cart on a track and measure the acceleration of the cart with a motion detector. The acceleration is measured t be equal to 3.5 meters/sec2. Calculate the frictional force. In which direction compared to the applied force is it directed?
The only equations I can think of are F=ma and f=μN.
The Attempt at a Solution
I have no idea where to start. Whenever I was given a problem in which I had to find acceleration, it was on a plane where I had angles and such to help me tie formulas together. have no clue what formula to use on this problem.