Does space have a physical role in the jerk of acceleration?

[Seminole Boy]

Does space have a physical role in the "jerk" of acceleration?

This "jerk" that the great Einstein talks about in his book is really confusing me. Without space, there seems not to be a medium through which matter can move, thusing allow it (matter) to make sense of "force."

I'll use one golden retriever in this example. Her name is Isabelle.

Isabelle is suspended in deep, deep space. Suddenly she turns on her rocket booster. She accelerates. Okay, now she feels this "jerk" Einstein talks about. From my understanding, this is a "force." Gravity (force of nature) is equivalent to acceleration. Okay, but what role does space (maybe spacetime) have in the golden retriever's feeling of this jerk?

The easy answer is: without space, nothing exists. I accept that. I'm just wondering if space has some unacknowledged role in the "jerk" matter feels when it is accelerated or decelerated. Or does space play no physical role in this?

 

[ghwellsjr]

This "jerk" that the great Einstein talks about in his book is really confusing me. Without space, there seems not to be a medium through which matter can move, thusing allow it (matter) to make sense of "force."

I'll use one golden retriever in this example. Her name is Isabelle.

Isabelle is suspended in deep, deep space. Suddenly she turns on her rocket booster. She accelerates. Okay, now she feels this "jerk" Einstein talks about. From my understanding, this is a "force." Gravity (force of nature) is equivalent to acceleration. Okay, but what role does space (maybe spacetime) have in the golden retriever's feeling of this jerk?

The easy answer is: without space, nothing exists. I accept that. I'm just wondering if space has some unacknowledged role in the "jerk" matter feels when it is accelerated or decelerated. Or does space play no physical role in this?

The answers haven't changed since the last time you asked this question:

My question: Will Billy, who is "accelerating", feel a "jerk" when he changes his rates of motion ("accelerates" of "decelerates"? If so, why?

I know we--or the pups--can SEE the relative motion, but in deep space, how can any of these goldens actually feel the difference between being at rest or accelerating?

My answer was (and still is):

A simple answer to your last question: when you are sitting at rest at a stop light in your car, you feel only the force of gravity pressing you down in your seat. When you step on the gas, you also feel the force of acceleration pressing you back in your seat. Or if you are traveling at some speed down the road and you make a turn, you feel yourself being pushed to one side of the car. In a weightless environment, you wouldn't feel the downward force but you would feel the backward force when you fire your thruster and it would go away when you turn the thruster off. Do you really have a problem with this?

And you said:

The Great Peter Donis, DaleSpam, and GHWells explained what I was missing. Great job, guys, and thanks! If a mentor wants to close the thread, feel free to do so.

What happened?

 

[Naty1]

Time keeps everything from happening at once;
space keeps everything from happening at the same location.

Things would be really confusing otherwise!

 

[Dale]

From my understanding, this is a "force." Gravity (force of nature) is equivalent to acceleration.

Gravity is equivalent to coordinate acceleration. The acceleration due to the force from the rocket is a proper acceleration. There is no equivalence between it and gravity.

 

[Seminole Boy]

GHWells:

Naty1 brings up a good point that you did not. This "jerking" from acceleration is important, and I'm trying to look at it from different angles. In yesterday's post, I said nothing about space's role in this, so just because my question involves golden retrievers, you needn't reduce it to being a copy of yesterday's question. There's a lot to mine in discussing acceleration.

 

[ghwellsjr]

GHWells:

Naty1 brings up a good point that you did not. This "jerking" from acceleration is important, and I'm trying to look at it from different angles. In yesterday's post, I said nothing about space's role in this, so just because my question involves golden retrievers, you needn't reduce it to being a copy of yesterday's question. There's a lot to mine in discussing acceleration.

I actually thought Naty1 was trying to be funny (in frustration).

You're looking for space to be a medium so that matter can make sense of force and motion?

It is very difficult to figure out what you are concerned about. You are asking some very basic questions that have nothing to do with relativity. They are the kind of issues that you should have learned about from studying general physics long before you take on relativity.

 

[PeterDonis]

Time keeps everything from happening at once;
space keeps everything from happening at the same location.

Didn't John Wheeler once put it: "time keeps everything from happening at once; space keeps everything from happening to me."

 

[Vanadium 50]

As mentioned before, it is neither unnecessary nor desirable to start multiple threads on the same topic.