An aero plane is flying horizontally at a steady speed of 67 m/s. A parachutist falls from the aero plane and falls freely for 80 meter before the parachute opens. Air resistance is negligible before the parachute opens.
1) Show that the vertical component of the velocity is approximately 40 m/s when the parachutist has fallen80 m. (g=9.8 m/s)
2) Find the magnitude and direction of the resultant velocity of the parachutist at this point?
3) Determine how the magnitudes of the vertical are and horizontal components of the parachutist's velocity are affected by air resistance before the parachute opens?