Does an object falling into the sun reach approximately the speed of light?
Not even close. It would impact at about 600 km/s.
Not even close.
[ EDIT You're fast! ]
Don't you have to know from how far it's falling to provide a value?
No, assume infinity and look up the escape velocity.
What about this calc
A= 10^-11 10^30 / 10^12
That's pretty fast, does this not apply?
Acceleration is not velocity. And your calculation has wrong numbers in it.
You are trying to calculate the gravitational acceleration on the "surface" of the Sun.
If you do it correctly you will get about 300 m/s^2.
But this is not a speed anyway. You cannot compare this with the speed of light (or any speed).
I think it's the escape velocity. If you put it infinitely. I'm no physicist, just using logic.
Vanadium is right
I think if you drop it infinitely, it's the escape velocity.
No, that formula is an acceleration and not a velocity.
I did not say anything about Vanadium's post.
Yes, I was about to follow up with the assumption that it falls from infinity.
Even if it doesn't, that still acts as the upper limit of final velocity.
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