Mass of projectile 63.5g
Mass of pendulum: 268g

trial 1: 6.07 m/s
trial 2: 6.21 m/s
trial 3: 6.05 m/s
trial 4: 6.16 m/s
trial 5: 6.14 m/s
average: 6.13 m/s

Height of pendulum start: 5.56 cm

Height after launch:
trial 1: 13.5 cm
trial 2: 13.35 cm
trial 3: 13.45 cm
average: 13.43 cm