Question

A blue ball is thrown upward with an initial speed of 22.2 m/s, from a height of 0.5 meters above the ground. 2.7 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 10.7 m/s from a height of 26.9 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

^a. What is the height of the red ball 3.51 seconds after the blue ball is thrown?

b. How long after the blue ball is thrown are the two balls in the air at the same height?

c. Which plot correctly shows the velocity of the two balls as a function of time?

d. Which statement is true about the blue ball after it has reached its maximum height and is falling back down?

The acceleration is positive and it is speeding up

The acceleration is negative and it is speeding up

The acceleration is positive and it is slowing down

The acceleration is negative and it is slowing down

Answer 1

solution