1. The problem statement, all variables and given/known data A 48 gram dart is shot vertically upwards from a catapult with a spring constant of 350 N/m. The catapult is initially stretched from the equilibrium point by 21 cm. What is the height above the starting point reached by the dart? 2. Relevant equations KE=PE, rearranging to find h gets h= v^2/2g find the velocity as it leaves the catapult as v= d(sqrt(k/m)) 3. The attempt at a solution v= 0.21m (sqrt(350Nm/0.048kg)) = 17.93 m/s h= (17.93m/s)^2 / 2(9.81m/s^2) = 16.38 m does this seem right?