QUESTION 4 In this experiment, the theoretical value of the range for each value of 0, calculated from equations 3 and 4 in your lab manual, actually contains some uncertainty, due to the uncertainty in the experimentally obtained value of vi. This uncertainty will need to be calculated separately for each value of 0, and used to set the error bars for your theoretical curve on the graph of R vs 0. Suppose your measurements from the horizontal launch of the projectile at a particular setting of the launcher were y = 116+ 0.5 cm, and x = 137 + 2.8 cm, what is the fractional uncertainty in your value of vi? (Use g = 980 cm/s2.)