1. During a lab activity, a student used an electric
scale to determine the mass of a small ball to be
1.50 kg. The ball was placed into a launcher that
provides a constant force of 4.50N. The students
then added an additional paper of 2.00 kg to the
launcher. The student placed both small balls into
the launcher and released them. What was the
acceleration of the balls at the instant they left the
launcher in m/s²?
