Problem: An object of mass 2.0kg starts from rest and slides down an inclined plane 69cm long in 0.90s. What net force is acting on the object along the incline? Now, I used what I was given and plugged it in the equation: deltaX=1/2at^2 + V0t I come up with acceleration = .0552 m/s^2 I plug this into equation: Fnet = ma for a net force of .11N This is wrong. Am I missing something? I don't have angle theta to use the equation: mgsin(theta).