Question

Problemi 2: A man stands on the roof of a 20.0 m tall building and throws a rock with a speed of 38.0 m/s an angle of 35.0 above the horizontal. Ignore air resistance. a) Provide the drawing and write all equations required b) Determine the maximum height above the roof that the rock reaches c) Calculate the speed of the rock just before it strikes the ground d) Find the horizontal range from the base of the building to the point where the rock strikes the ground

Answer 1

h=20m. Vo=38mls vor 0-35 2 noch K a) Equations required Va utat S=ut that 2 v² wataas by h max = ? hle vo sino (38) Sin 3524.21m - 2x9.81 Tag above the roof. c) Speed = ? By Ke Conservation 1 / 2 ml ve ²+ migh = £2 nd up 2 1= 42.85m/s

d> Range=? time of flight = ? T= titta ag ti: V Sino - 2-22 18 sec ta = 2h+h!) - 3 sec. sec . T=5.2218 d= Tx Vo cos o d = 162.54m