Review | Constants A sled starts from rest at the top of the frictionless, hemispherical, snow-covered hill shown in (Figure 1). Part A Find an expression for the sled's speed when it is at angle . Express your answer in terms of some, all, or none of the variables R, O, and the free-fall acceleration g. View Available Hint(s) Figure < 1 of 1 R + v1 = gR cos (4) Submit Previous Answers Incorrect; Try Again; 8 attempts remaining ? Use NewLOITS laws to find the Express your View Available Hint(s) have at angle with the of the variables K, &, and the free-fair accelerationg. Vmax= gRcos () P Pearson A sled starts from rest at the top of the frictionless, hemispherical, snow-covered hill shown in (Figure 1). AvailabI Umax gRcos () Submit Previous Answers Part C Correct At what angle max does the sled "fly off" the hill? Express your answer in degrees to three significant figures. View Available Hint(s) Figure < 1 of 1 Omax = R Submit Previous Answers Request Answer x Incorrect; Try Again; 7 attempts remaining Provide Feedback PPearson ? Next >