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2006-09-30 16:27:35 · 5 answers · asked by ISOBESTANSWERS 2 in Science & Mathematics Physics

I am getting a lot of answers about there being no friction. I heard about something called solar wind in space, and I thought this would contribute to speed loss. The reason I asked this questions is that if there is no friction in space and if something would just keep going in a direction at the same speed forever.... then I was thinking about things like.. 1.) why does light take so long to reach another place.. , etc.

2006-09-30 16:41:58 · update #1

I am getting a lot of answers about there being no friction. I heard about something called solar wind in space, and I thought this would contribute to speed loss. The reason I asked this questions is that if there is no friction in space and if something would just keep going in a direction at the same speed forever.... then I was thinking about things like.. 1.) why does light take so long to reach another place.. , etc.

2006-09-30 16:41:59 · update #2

5 answers

When you roll a marble on Earth, the marble stops because there is friction between the marble and the ground, as well as the air around the marble.

If you were in space and there is no atmosphere, but you are still rolling the marble on a surface, then there would still be friction between the marble and the surface, which would eventually stop the marble from rolling.

If you were in space and there are no surface to roll the marble, so you are just pushing the marble into motion in vacuum, then the marble will encounter no friction, and will not lose speed or stop.

In order to calculate the ratio of speed loss, we would have to know the coefficient of friction for the surface on Earth and the surface used in space, and also know the amount of drag that the air on Earth places on the rolling marble.

2006-09-30 16:42:02 · answer #1 · answered by PhysicsDude 7 · 1 0

in space, if you rolled a marble on a "level" (straight) surface, then the friction would cause the marble to "bump" a small tiny amount, and the marble would fly off the surface. gravity would not pull it back to the surface. think about it.

now, if you had a sphere, and the marble was rolling around in the sphere... i'm not sure, i'd have to think about that some more...

but, the main thing that causes a rolling object to slow down is friction. the rate of change for this depends on how rough the edges are (for both the object and the surface). both of these surface types together determine the "coefficient of friction", which determines how much friction slows an object down.

another factor that slows down motion is wind resistance, but this is somewhat negligible compared to the friction factor. in space, you wouldn't have this wind resistance, so that would make things roll faster in space.

2006-09-30 23:33:52 · answer #2 · answered by PJ 3 · 0 0

Rolling a marble in space would not cause a loss of speed because there is no friction

astronauts must grab something or bump into something in order to stop their momentum in space

2006-09-30 23:30:57 · answer #3 · answered by an_inflection 2 · 0 0

wigidi wat. I think the time of pie in the space time continuum will conflict with the ratio of the astronomical interference of neutons second law of motion. Thou shall not know the way the marble rolls. but wat rolld thou marble. Earth is gravitational motionless in space. So earth cause the marble to move. Do you get it

Equation

6n-5h/70gh*/856=5+999t-6/b=2=

2006-09-30 23:38:52 · answer #4 · answered by Anonymous 1 · 0 0

i don't think there is any speed loss because you don't have wind velocity and pot holes as well as stupid drivers in space. a shuttle can do 18,000 miles per hour easily.

2006-09-30 23:32:55 · answer #5 · answered by ? 7 · 0 0

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