1. The problem statement, all variables and given/known data A block slides down a frictionless half-pipe (shown on the back of this page). It is released from rest at the point (2,0). Determine the velocity, tangential accleration, radial acceleration and angular acceleration when the block goes through angular displacements of 30, 60, 90, 120, 150 and 180 degrees respectively. On the diagram, draw vectors to scale representing each of the linear quantities. 2. Relevant equations θ = s/r Really all of the rotational motion equations. Including the rotational kinematics equations. 3. The attempt at a solution I calculated the displacement at each degree interval by converting the degress to radians and then using the equation θ = s/r. My question to you is where do I go from here? The question doesn't give me anything else other than that it's dropped from rest. Am I to assume that the radial acceleration is equal to gravity? Any help would be much appreciated. Image of half-pipe attached.