Solving a Simple Physics Question: Intersecting Balls in Motion

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The discussion revolves around a physics scenario where three baseballs are thrown towards a point on a football field, with one ball thrown vertically from the center. Key principles to describe the intersection include velocity vectors and trajectory analysis, which help distinguish the balls despite their identical appearance. The third ball's motion can be determined by its velocity at the moment of intersection, indicating whether it is ascending or descending. The balls can be differentiated not only by their motion but also by potential visual markers, such as color. Overall, the intersection of the balls presents an interesting application of kinematics and dynamics in physics.
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If a baseball was thrown from each end of a football field toward the opposing goal post, and a third ball was thrown straight up from the center of the field so that all three balls pass the same point at the same time (assuming they don't collide)

What principles are needed to describe the event at the moment they intersect?
How can each ball be described and distinguished from the other two, from the description can it be determined if the third ball was on its way up or down at the moment of intersection.

If the three balls were identical to start with, is there any difference between the three balls at the moment they pass the same point and time

Thank you for addressing my simple physics question







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phyaction said:
If a baseball was thrown from each end of a football field toward the opposing goal post, and a third ball was thrown straight up from the center of the field so that all three balls pass the same point at the same time (assuming they don't collide)

What principles are needed to describe the event at the moment they intersect?
How can each ball be described and distinguished from the other two, from the description can it be determined if the third ball was on its way up or down at the moment of intersection.

If the three balls were identical to start with, is there any difference between the three balls at the moment they pass the same point and time

Thank you for addressing my simple physics question







________________________________________________________________________
watch funny videos

Well, one obvious difference is that they have different velocity vectors.
 
You could paint them different colours... we don't have to distinguish things purely by their classical dynamics variables.
 
cool you are quick...:)

thanksx
 
TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
Kindly see the attached pdf. My attempt to solve it, is in it. I'm wondering if my solution is right. My idea is this: At any point of time, the ball may be assumed to be at an incline which is at an angle of θ(kindly see both the pics in the pdf file). The value of θ will continuously change and so will the value of friction. I'm not able to figure out, why my solution is wrong, if it is wrong .
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