A red ball is thrown down with an initial speed of 1.3 m/s from
a height of 27 meters above the ground. Then, 0.5 seconds after the
red ball is thrown, a blue ball is thrown upward with an initial
speed of 23.9 m/s, from a height of 0.7 meters above the ground.
The force of gravity due to the earth results in the balls each
having a constant downward acceleration of 9.81
m/s2.
1)
What is the speed of...