Recent content by Starby
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Undergrad When do friction forces stop acting?
Another classic case of "I understand it in reality, but on paper it just makes no sense and I'm confused". There is an object sliding north on a surface where the normal is 10N. The co-efficient for kinetic friction for the surface is 0.5. Simple math will tell me that the force of friction... -
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High School (simple) Applying constant force - Newton's first Law
Thanks, I have been given many good answers and understand pretty much how it works now. The reason for my unclear statements was my lack of understanding when I posted the thread. What I meant by "would it accelerate any faster" is if an object were to accelerate faster when exerting a force...- Starby
- Post #12
- Forum: Thermodynamics
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High School (simple) Applying constant force - Newton's first Law
Thanks, my confusion came from trying to grasp WHY there will be no acceleration after the impulse. But I think I understand now, If F=ma it means the acceleration will be 1m/s², but this acceleration (change in velocity) is only for the brief duration of a second that this impulse lasts as I...- Starby
- Post #9
- Forum: Thermodynamics
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High School (simple) Applying constant force - Newton's first Law
To clarify, the first object I push in my example will just go off at a constant velocity of 1m/s in pushed direction forever? As I'm not exerting force on it during its travel there will be no acceleration, hence there are no forces acting on it? The second object would accelerate constantly as...- Starby
- Post #6
- Forum: Thermodynamics
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High School (simple) Applying constant force - Newton's first Law
Thanks, I think it's more clear now. I edited the post above, but you might not have had the chance to read it. So to make things clear, applying 1N in the first second would result in the object just moving along at a constant speed of (im guessing) 1m/s in the direction pushed. However the...- Starby
- Post #4
- Forum: Thermodynamics
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High School (simple) Applying constant force - Newton's first Law
Another silly question... Assuming a surface with no friction in space (you get the idea), I push/kick/give a 1kg block on this horizontal plane a force of 1N. It would start to accelerate in the direction i pushed it with at a rate of 1m/s² forever until another force acted upon it. So far so...- Starby
- Thread
- Constant First law Force Law Newton's first law
- Replies: 11
- Forum: Thermodynamics
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High School Acceleration of object at constant velocity in rotation?
Thank you! That makes a lot of sense, I thought that would be the case but wanted for someone to confirm it. I forgot to put in the units, thought I had edited the post, but apparently not. Thank you, I'm familiar with that, I just wanted to see how the calculation is performed on two... -
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High School Acceleration of object at constant velocity in rotation?
Yes, so, if a velocity vector changes its direction the acceleration changes as well even if the speed is constant because the vectors at two given points are actually different. If I have a velocity of 1m/s in direction 90 degrees upwards at t=0s and 1m/s in diretion 0 degrees right at t=1s... -
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High School Acceleration of object at constant velocity in rotation?
Well I think I know the basics of it. I know that velocity is a vector, and that speed is a magnitude. But you're right, I guess I'm thinking of speed when talking about acceleration. The more straightforward question I would want to ask is simply why acceleration is a change of velocity, not a... -
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High School Acceleration of object at constant velocity in rotation?
I have some questions about acceleration that I'd like for someone to explain to me. As far as I know, acceleration depends on either change in velocity or change in direction (or both). So if I'm going 1m/s North constantly I'm not accelerating. However, what would be the acceleration if I walk...