Predict \(\&\) Explain You throw a ball upward and let it fall to the ground.
Your friend drops an identical ball straight down to the ground from the same
height. (a) Is the change in kinetic energy (from just after the ball is
released until just before it hits the ground) of your ball greater than, less
than, or equal to the change in kinetic energy of your friend's ball? (b)
Choose the best explanation from among the following: C. The change in
gravitational potential energy is the
same for each ball, which means that the change in
kinetic energy must also be the same.
A. Your friend's ball converts all of its initial energy into kinetic energy.
B. Your ball is in the air longer, which results in a greater change in
kinetic energy.