initial momentum pi= 52, 186.17 +- 59.21 gm*cm/s. The same projectile, launched in the horizontal direction; is caught by a stationary pendulum with a mass of 265.2 +- 0.2 g. The pendulum rises 12.55 +- 0.01 cm in the vertical direction. Show the formulas for final momentum and error calculations, then calculate and formally report the momentum of the ball-pendulum system at the moment the ball is caught by the pendulum.