# Is Meters per Second Squared a Measure of Velocity Increase?

• Femme_physics
In summary, according to classical physics, if you are sitting on a planet, your velocity remains constant, yet according to general relativity, you are accelerating away from the planet.
Femme_physics
Gold Member
"Meters second ² simply means that your velocity will increase by some value every second. For instance, 9.8 m/sec² means that your velocity will increase by 9.8 meters per second every second. If you continue to accelerate at that rate, after 10 seconds you'll be moving at 98 meters/second."

true, but only until you hit terminal velocity

So once an object keeps accelerating until it gets to the speed of light and that its terminal velocity?

Nothing with mass can reach the speed of light.

But even electrons have mass, and even waves have particles. So, even they can't reach the speed of light?

Particles such as electrons can be accelerated to near light speeds but can't quite reach the speed of light.I think questions of this type have been discussed numerous times on this forum so my advice now is to first do some research here and elsewhere and come back when you have any specific problems.

G037H3 said:
true, but only until you hit terminal velocity
No, this has nothing to do with terminal velocity and your velocity doesn't increase at a constant rate in drag.

Dory said:
So once an object keeps accelerating until it gets to the speed of light and that its terminal velocity?
Your first post was fine, but it has nothing to do with terminal velocity and only works for speeds much lower than the speed of light.

For an object accelerating due to gravity from zero speed and a large height, without drag, the maximum speed (the speed you're going when you slam into the ground) is the escape velocity of the earth.

You pretty much have to disregard relativity for that statement all together. If he is talking about classical physics, it's fine. But once you throw in relativity, things become interesting.

When you are sitting on a surface of a planet, your velocity stays constant, yet according to GR, you are accelerating away from the planet.

But considering nature of the question, I would assume they want a purely classical answer, so none of it matters.

I did http://www.dlugosz.com/files/PhysFAQ-edit/Relativity/SR/spaceship_puzzle.html" of that to illustrate Bell's Spaceship Paradox. In SR, you wind up with a hyperbola from constant acceleration in your own frame.

Last edited by a moderator:

## 1. Is the following sentence true?

The truthfulness of this sentence cannot be determined without knowing what the sentence actually is. Please provide the sentence in question.

## 2. Can you provide context for the following sentence?

Without context, it is impossible to determine the truthfulness of a sentence. Please provide the sentence in question along with any relevant information or background.

## 3. How can I determine if a sentence is true or false?

The truthfulness of a sentence depends on various factors such as evidence, logic, and context. It is important to critically evaluate the information presented and consider multiple perspectives before determining its truthfulness.

## 4. What makes a sentence true or false?

A sentence can be considered true if it is supported by evidence and aligns with objective reality. On the other hand, a sentence can be deemed false if it is not supported by evidence or goes against established facts.

## 5. Can a sentence be both true and false?

In most cases, a sentence cannot be both true and false at the same time. However, there are instances where a sentence may be partially true or have elements of truth mixed with falsehoods. It is important to examine the sentence carefully and determine the level of truthfulness for each aspect of it.

Replies
2
Views
4K
Replies
18
Views
3K
Replies
2
Views
793
Replies
21
Views
633
Replies
54
Views
3K
Replies
4
Views
999
Replies
8
Views
1K
Replies
138
Views
5K
Replies
9
Views
1K
Replies
47
Views
817