Linear kinematics problem with limited variables.

AI Thread Summary
The discussion centers on a kinematics problem involving two rocks: one dropped from a height and the other thrown upward with an initial velocity. The key challenge is the lack of information regarding the initial velocity of the upward-thrown rock, which is crucial for determining when and where the two rocks will meet. Participants emphasize the need to establish equations of motion for both rocks to solve the problem, specifically noting that the solution hinges on equating their positions over time. Without the initial velocity, the problem remains unsolvable. The conversation highlights the importance of complete information in physics problems for accurate analysis and resolution.
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A rock is dropped from a cliff of height h. At the same time a rock is thrown straight up from the bottom with an initial velocity. Assuming they meet, at what time will they meet.

V1 = 0
A = -9.82

Thats all you have across both rocks... is this even possible. You probably have to do some substitution equation and make ts equal each other. Idk.
 
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Btipold said:
A rock is dropped from a cliff of height h. At the same time a rock is thrown straight up from the bottom with an initial velocity. Assuming they meet, at what time will they meet.

V1 = 0
A = -9.82

Thats all you have across both rocks... is this even possible. You probably have to do some substitution equation and make ts equal each other. Idk.
Well, if you don't write down any equations which describe the motion of each rock, the solution to this problem will remain an eternal mystery.
 
Btipold said:
A rock is dropped from a cliff of height h. At the same time a rock is thrown straight up from the bottom with an initial velocity. Assuming they meet, at what time will they meet.

V1 = 0
A = -9.82

Thats all you have across both rocks... is this even possible. You probably have to do some substitution equation and make ts equal each other. Idk.
Clearly the answer will depend on the velocity with which the lower rock is thrown. The question statement reads as though you were about to be given that velocity, but it's missing. Have you left something out?
 
They will meat if ## x_1 = x_2 ## where ## x_1, x_2 ## are the equation of motion of rock 1 and rock 2, can you figure out what these equation are ?
 
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