1. Calculate the vertical distance that the combined mass rises for each trial . Record these values in Table 1. 2. Use Equation 4 and calculate the velocity I of the combined masses for each of the five trials . Record your results in Table 1. Please use ? = 980 ??/? V = 2?(? , - ? 3. Use equation 2 and calculate the initial speed of the projectile ball V?? for the five trails and record those values in Calculations Table 1. V LV = 4. Calculate the average of the initial velocity of the ball from the five trials : (V ) = 40.09 ( cm /s) 5. Use the vertical distance , the value for the gravitational acceleration ? = 980 , to calculate the time it takes for the projectile to reach the floor : ? 6. Determine the total horizontal distance traveled by the ball for each of the five trials : ? = ?+?. 7. Determine the initial velocity of the projectile using equation 1, for each of the five trials : V 8. Calculate the average initial velocity of the projectile for the five trials . Compare this result by calculating a percentage difference with the one obtained in the projectile motion lab : * 100 %