Problem 4) The range of a projectile launched at velocity V and angle 0 is R-2 V2 sin(0) cos(e) a) Find the range if V-20m/s and 0-30 degrees (5 pts) b) If the uncertainty in the launch angle 0-30 +/-2 degrees, what is the uncertainty of the range (10pts) c) What should the accuracy of the launch angle have be to keep the uncertainty of the range to within 5%. (10 pts)