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danni
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Homework Statement
A ball is thrown straight up. At the top of its path its instantaneous speed is
a) 5m/s
b) 20m/s
c) 50m/s
d) 10m/s
What is the Instantaneous Speed at the Top of a Ball's Path?
- Thread starter danni
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- Dimension Kinematics
AI Thread Summary
The instantaneous speed of a ball at the top of its path is zero, as it momentarily stops before descending. The question presents multiple choice options for speed, but none accurately reflect this fact. Understanding that at the peak of its trajectory, the ball's velocity is zero is crucial for solving similar problems. The lack of additional information like initial velocity or time complicates the solution process. Ultimately, recognizing that the instantaneous speed at the top of the path is zero is essential for answering such questions correctly.
Here is what I tried
This question was actually asked in one of our engineering entrances.
The answer was 1D.
My teachers say that we have to use μₘ/fₘ to get to this answer. I cannot understand why. I'll be really glad if you could tell me the exact definition of power (numerically) that works in all scenarios.
TL;DR Summary: I would like to know the voltmeter readings on the two resistors separately in the picture in the following cases , When one of the keys is closed When both of them are opened (Knowing that the battery has negligible internal resistance)
My thoughts for the first case , one of them must be 12 volt while the other is 0
The second case we'll I think both voltmeter readings should be 12 volt since they are both parallel to the battery and they involve the key within what the...
The answer to this question is statements (ii) and (iv) are correct.
(i) This is FALSE because the speed of water in the tap is greater than speed at the water surface
(ii) I don't even understand this statement. What does the "seal" part have to do with water flowing out? Won't the water still flow out through the tap until the tank is empty whether the reservoir is sealed or not?
(iii) In my opinion, this statement would be correct. Increasing the gravitational potential energy of the...
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