SOLUTION: use the quadratic formula to determine the times when an object launched vertically from the surface of the earth at an initial speed of 30m/s reaches a height of 20 meters. Includ
Question 1196882: use the quadratic formula to determine the times when an object launched vertically from the surface of the earth at an initial speed of 30m/s reaches a height of 20 meters. Include a sketch with the solution. Answer by ikleyn(52778) (Show Source):
