D Question A 735 kg roller coaster starts from rest at its highest point A. Assuming no friction, calculate the: a) PE at A, B,C, D b) KE at A, B,C,D c)Speed at points B, C, & D. Show all work and units in your calculations D 40 m 35 m B 20 m XIX Edit View Insert Format Tools Table 12pt w Paragraph ~ B I U A v 2 T2 v