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Does time slow down as speed increases?

Updated: 9/17/2023
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13y ago

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yes. and then again, no. try reading some Einstein, getting a physics degree and then you still won't be able to understand. but, I'll try to explain. if you are the one travelling at the speed. no. if you're not, yes. sorry best i can do without a 15,000 word essay.

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12y ago
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13y ago

If you go whizzing past me at a high speed, then I'll notice that your wristwatch

looks like it's running slow, and the pitch of your voice has dropped. I'll think to

myself, "Hey ! I'm OK, but his time has slowed down."

At the same time, you'll notice that my wristwatch looks like it's running slow, and

the pitch of my voice has dropped. You'll think to yourself, "Hey ! I'm OK, but his time

has slowed down."

We'll both be correct.

============================================

Another contributor added:

When something goes past you at high speed, it takes longer for the light bouncing off of that thing to reach the observer. This also goes in reverse, say, if you are traveling at high speed and you see that someone standing still has slowed down. To the observer (you) the person standing still is traveling away from you and you are standing still.

___________

This doesn't mean that after the traveler stops, everyone's time will be back in synch. If you start off on earth and accelerate to near the speed of light and you travel for a significant length of time according to earth observers, when you return LESS TIME will have passed for you; you will be younger (relative to your velocity and time away) than the twin brother you left on earth. You will literally have experienced less time.

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Continue Learning about Physics

Suppose that you are in a moving car and the motor stops. You step on the brakes and slow the car to half speed. If you release your foot will the car speed up or continue at half speed or slow down?

Assuming you are not pressing down on the gas, when you release the pedal, the car will slow down over time and evetualy come to a stop. Unless you are going down a hill, in which case you will speed up.


What happens to the speed as time increases?

Time is not usually said to "increase" - time elapses, or passes. What happens to the speed depends on the specific situation. For example, if you have a cart and give it a push, it may start with a high speed, but will slow down (due to friction) as time elapses.


Is time dilation is apparent or actual change?

actual, time really does slow down close to the speed of light


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By increasing speed over a fixed period of time, you increase the distance you travel in that period of time. If you drive 20 mph for an hour, you go 20 miles. If you drive 30 mph for that same hour, you go 30 miles. Just like you knew you would.


When Jennifer is out for a ride she slowns down on her bike as she approaches a group of hikers on a trail explain how her acceleration can be positive even though her speed is decreasing?

Hum, it cannot. As acceleration is the first derivative of the speed, if the speed is constant the derivative is null, if the speed is decreasing the derivative is negative. When talking about all this stuff we take into account the instantaneous values (instant speed, instant acceleration). Note that when you slow down, you slow down overall but can locally in time accelerate a little bit, let's say during 1/10th of a sec because you reached a partion of the road which was sloping. However this does not change the fact that when the speed decrease, the acceleration is negative.

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What happens to a graph of time and distance as speed increases?

The graph of distance vs time increases exponentially as speed increases.


Suppose that you are in a moving car and the motor stops. You step on the brakes and slow the car to half speed. If you release your foot will the car speed up or continue at half speed or slow down?

Assuming you are not pressing down on the gas, when you release the pedal, the car will slow down over time and evetualy come to a stop. Unless you are going down a hill, in which case you will speed up.


What happens to the speed as time increases?

Time is not usually said to "increase" - time elapses, or passes. What happens to the speed depends on the specific situation. For example, if you have a cart and give it a push, it may start with a high speed, but will slow down (due to friction) as time elapses.


Is time dilation is apparent or actual change?

actual, time really does slow down close to the speed of light


What is Chronokinesis?

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If atoms move faster as they heat up what would happen if you could heat something up enough that it's individual atoms moved near light speed?

First of all, it is scientifically impossible for any type of matter to reach light speed. Secondly, if said matter is near light speed, then that matter will increase in density as it increases in speed. Also, time will slow down around the matter as it increases in speed.