Can an object's speed ever be uniform?

Answer 1

Only if the net force operating on that object is exactly zero. Perhaps at the center of gravity of the universe if that happens to be in space rather than inside a planet or star.

You could perhaps find a single point in spacetime where that is true, but if the object is moving, it won't stay there.

But then there's the Principle of Equivalence. If I thought I was in that spot, how could I tell whether there was no force on me? I could be in free-fall in a gravitational field but I'd have no way of knowing that.

In terms of General Relativity, motion in spacetime is unaffected by gravity. Instead, gravity affects the shape of spacetime. So, I'd only need to make sure the effects of all other forces was neutral. So, in the center of a perfectly conducting sphere, my motion in spactime would be uniform.

Answer 2

Newton had some laws you learned about. I cant remember which law it is but the jists of it is that objects in motion stay in motion, and objects at rest stay at rest. So the answer to your question is .. An object can have uniform motion as long as there are no net forces acting on it. If this is an answer for class just remember the word "net" is key.

Answer 3

Every object will reach its Terminal Velocity. This is the speed of gravity times mass subtracting drag. Therefore if you drop an object from very high, it will always accelerate to a max speed. A uniform speed if you will. Every time.

Answer 4

in a vacuum it can be, the only other way is to have a uniform speed of 0

Answer 5

the term uniform means the same
so over an infinitesimally small period of time it can be uniform
for that instant of time