1. The problem statement, all variables and given/known data Given hb (m) = 1 (Height of point B) theta = 30 (degrees - launch angle) k (N/m)= 60 (assume the graph is linear) m (g) = 250 (balloon mass) 1. If Xs (cm) = 150 (pull distance) a) Find the estimated Vb and the landing X (ideal case where Ein =Eout) b) The balloon land 160 ft away. Find the actual Vb for the shot. Find also the Eout and the efficiency of the launcher. 2. Relevant equations 1/2kx^2 mgh 1/2mv^2 3. The attempt at a solution dont know how to solve for a)...not sure with the what i am doing. any hint on what formula i should be using? for b, i put ft into m, so x = 48.7656m and used it to find time, t = 2.439s, which is then use to find Vb, Vb = 23.087m/s so how exactly do i solve for a) and find Eout and the efficiency ?