A blue ball is thrown upward with an initial speed of 21.4 m/s, from a height of 0.8 meters above the ground. 2.6 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 8.4 m/s from a height of 25.5 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/s?. Assume that the coordinate system is the standard one, with +y pointing upward. 1) What is the speed of the blue ball when it reaches its maximum height? m/s Submit 2) How long does it take the blue ball to reach its maximum height? s Submit 3) What is the maximum height the blue ball reaches? m Submit

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A blue ball is thrown upward with an initial speed of 21.4 m/s, from a height of 0.8 meters above the ground. 2.6
seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 8.4 m/s from a height of 25.5
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/s?. Assume that the coordinate system is the standard one, with +y pointing upward.
1) What is the speed of the blue ball when it reaches its maximum height?
m/s Submit
2) How long does it take the blue ball to reach its maximum height?
s Submit
3) What is the maximum height the blue ball reaches?
m Submit
4) What is the height of the red ball 3.38 seconds after the blue ball is thrown?
m Submit
5) How long after the blue ball is thrown are the two balls in the air at the same height?
s Submit
Transcribed Image Text:A blue ball is thrown upward with an initial speed of 21.4 m/s, from a height of 0.8 meters above the ground. 2.6 seconds after the blue ball is thrown, a red ball is thrown down with an initial speed of 8.4 m/s from a height of 25.5 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/s?. Assume that the coordinate system is the standard one, with +y pointing upward. 1) What is the speed of the blue ball when it reaches its maximum height? m/s Submit 2) How long does it take the blue ball to reach its maximum height? s Submit 3) What is the maximum height the blue ball reaches? m Submit 4) What is the height of the red ball 3.38 seconds after the blue ball is thrown? m Submit 5) How long after the blue ball is thrown are the two balls in the air at the same height? s Submit
6) Which plot correctly shows the velocity of the two balls as a function of time?
- Blue Ball
Blue Ball
Blue Ball
....... Red Ball
....... Red Ball
* Red Ball
Time
Time
Time
A
В
A
Submit
7) Which statement is true about the blue ball after it has reached its maximum height and is falling back down?
O 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
O The acceleration is negative and it is slowing down
Submit
(Survey Question)
8) Below is some space to write notes on this problem
Submit
Velocity
Velocity
Velocity
Transcribed Image Text:6) Which plot correctly shows the velocity of the two balls as a function of time? - Blue Ball Blue Ball Blue Ball ....... Red Ball ....... Red Ball * Red Ball Time Time Time A В A Submit 7) Which statement is true about the blue ball after it has reached its maximum height and is falling back down? O 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 O The acceleration is negative and it is slowing down Submit (Survey Question) 8) Below is some space to write notes on this problem Submit Velocity Velocity Velocity
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