1. A square block slides down an incline. There is a moment the block starts sliding and a moment the block hits the bottom of the incline. Construct a two dimensional reference frame that is stationary with respect to the incline. 2. A car in a 1-dimensional reference frame has coordinate (3m), velocity (5m) when the time coordinate is zero, and has constant acceleration 6 at all times. (a) What is the velocity of the car when the time coordinate is 4s? (b) What is the coordinate of the car when the time coordinate is 2s? (c) What is the displacement of the car over the time interval (1 s, 2s]? 3. (a) State Newton's first law of motion. (b) Explain how it specifies which reference frames are inertial frames. (c) Describe an experiment that could falsifyi