A red ball is thrown down with an initial speed of 1.3 m/s froma height of 27 meters above the ground. Then, 0.5 seconds after thered ball is thrown, a blue ball is thrown upward with an initialspeed 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 eachhaving a constant downward acceleration of 9.81m/s2.
1)
What is the speed of the red ball right before it hits theground?
m/s
Your submissions:
2)
How long does it take the red ball to reach the ground?
s
Your submissions:
3)
What is the maximum height the blue ball reaches?
m
Your submissions:
4)
What is the height of the blue ball 2 seconds after the red ballis thrown?
m
Your submissions:
5)
How long after the red ball is thrown are the two balls in theair at the same height?
s
Your submissions:
6)
Which statement is true regarding the blue ball?
After it is released and before it hits the ground, the blueball is always moving faster than the red ball at any giventime.
After it is released and before it hits the ground, the blueball is sometimes moving faster than the red ball at any giventime.
After it is released and before it hits the ground, the blueball is never moving faster than the red ball at any giventime.
Your submissions:
7)
Which statement is true about the red ball?
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
