Terminal Velocity Theoretical Small Medium Large Parachute Size (Inches) *Actual measurement* 12 18 24 Mass (Kg +/- .008) 0.0567 0.0567 0.0567 Parachute Area (m^2)) *Actual measurement* 0.0729 0.1641 0.2917 Gravity (m/s^2) 9.81 9.81 9.81 Air Density (Kg/M^3) *At 0 degrees C* 1.3 1.3 1.3 Terminal Velocity (m/s) 3.43 2.28 1.71 Time to fall 3.88m +/- .001 (seconds +/- .2) 1.1 1.7 2.3 Terminal Velocity Test Data Average time +/- .2 1.00 1.63 2.33 Terminal Velocity (m/s) 3.88 2.38 1.67 Terminal Velocity Fly Test Mass (Kg +/- .008)(rocket + engine + altimeter) 0.092 Gravity (m/s^2) 9.81 Air Density (Kg/M^3) 1.3 Terminal Velocity (m/s) 4.367 Calculated Terminal Velocity (ft/s) 14.33 Altitude from Altimeter (meters +/- 1) 83.5 Measured Freefall time (seconds +/-2) 13 Measured Terminal Velocity (m/s +/- 2) 6.4