Experimental Theoretical Angl e (9 ) Initial Velocity Time of Flight Calculated Range (m) Time of Flight Calculated (m/s) (s) Range (m) (s) 10 4.00 0.16 0.62 0.171 0.573 20 4.01 0.26 1.05 0.299 0.997 25 3.98 0.33 1.22 0.346 1.091 30 3.98 0.39 1.41 0.389 1.153 35 3.96 0.45 1.54 0.437 1.229 40 3.96 0.50 1.57 0.496 1.345 45 3.95 0.57 1.56 0.518 1.238 50 3.94 0.62 1.54 0.541 1.142 55 3.94 0.66 1.53 0.574 1.076 60 3.93 0.70 1.44 0.548 0.897