1. The problem statement, all variables and given/known data A block is projected up a 30° slope at 4m/s. When it is moving the coefficient of friction is 0.3. When the block is stationary the maximum coefficient of friction is 0.5. a. Calculate how far up the block will go. b. Show that the block will not remain there. c. Calculate the velocity of the block when it reaches the bottom 2. Relevant equations ΣF=mg μ=Friction / Perpendicular Contact force 3. The attempt at a solution I just joined a class in the middle of a topic, and so I am completely stuck at this one. I know that when the block is stationary ΣF=0 in the x-direction (x-Axis is parallel to the inclined plane) so when the object stops, the coefficient of friction is far greater. I am not sure how to do the question, as we are not supplied a Mass (m), and I have no idea how to use the angle θ to solve this. Any help would be appreciated!