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how fast would you have to go to time travel

how fast would you have to go to time travel插图

The speed of light
You have to go as fast asthe speed of light. This means that travelling back in time is impossible as you would have to go faster than the speed of light. This also means that if you ran 100m and two people time you-yourself and someone not running-then your time would be faster than the other guy’s time.

What is the best way to convert speed to time?

You will need to convert the metrics to the same time and distance units, e.g. miles, kilometers, meters, yards, feet, and hours, minutes or seconds. For example, if you have speed in mph (miles per hour), time should also be in hours. If you have distance in kilometers, then speed should also be in km/h (kilometers per hour).

What is the average speed of 2450 miles per hour?

The answer is 2450 / 5 = 490 mph (miles per hour) average speed. If you want the result in km/h, you can convert from miles to km to get 788.58 km/h. Distance formula. The formula for distance, if you know time (duration) and the average speed, is: d = v x t

Can anything travel faster than the speed of light?

Nothing can travel faster than the speed of light. But if it could , the conventional wisdom goes, it would travel back in time. Is the conventional wisdom right?

What is the difference between speed and time?

For example, if you have distance in miles and speed in km/h, you will need to convert speed to mph or distance to kilometers. The time unit of the result will match the time unit of the speed measure, so if it is measured in something per hour, the result will be in hours. If it is measured in some unit per second, the result will be in seconds.

Why does the observer see the spaceship on the way back?

In fact, because the spaceship is “riding along” at the speed of light with the light it emits on the way back, the observer sees both the landed ship and the “movie” of its return journey, all at the same time, when it arrives back on Earth. Traveling at the speed of light, half of the journey appears to be instantaneous, …

What happens when a spaceship goes exactly at the speed of light?

When the spaceship goes exactly at the speed of light, from the point of view of the observer back on Earth, everything appears normal as the ship speeds away. But just when the spaceship appears to reach the planet, it instantly materializes back on its landing pad on Earth, and the observer sees a huge flash of light containing an “instantaneous …

What happens to the original spaceship before it takes off?

Then, the original spaceship takes off at its normal time, and they annihilate as before at the planet.

How long does it take for a spaceship to get back to Earth?

The light that the spaceship emits, say, five years into the journey will be seen by the Earthbound observer ten years after the ship took off, because it takes it five more years for it to get all the way back to Earth.

How long does it take for light to travel from year 15 to year 20?

As it gets closer to Earth, the light it emits has a shorter distance to backtrack. So, light from year 15 of the trip only has to travel for five years before it reaches the observer, 20 years after launch day. In fact, because the spaceship is “riding along” at the speed of light with the light it emits on the way back, …

Why do we call it an image pair creation event?

We call this an “image pair creation event,” because the real ship is accompanied by two images. You can think of it like mailing selfies home from long, round-trip vacation. Just as the spaceship was traveling faster than light, you are traveling faster than snail-mail, so you beat some (or all) of your mailed selfies home.

What is the difference between U and C?

where u is the velocity of the planet relative to Earth, and c is the speed of light.

What would happen if you doubled the speed of light?

If you can double the speed of light, or even achieving it, you would most likely reach absolute hot, $$ {mathtt {2.55}} {mathtt {,times,}} { {mathtt {10}}}^ { {mathtt {32}}}$$ degrees Fahrenheit, essentially messing you up. But, let’s say that you survive absolute hot, and you DON’T die. Einstein’s general theory of relativity states that time is different to all observers, so you would’t be stopping time for everyone, just yourself, and you wouldn’t be even stopping time, just making it seem very slow from your perspective. So you would have to be moving at around the speed of light. BUT WAIT, THERE’S MORE! Time isn’t REAL. It’s just some stuff made by man to keep track of things! It’s not REAL! What I just said above could all be false! There might not even be a past, or a future! Ok, thats enough tinkering with the Matrix for now. Bye.

Does Einstein believe that clocks tick slower?

If you agree with the special theory of relativity, Einstein states the a clock ticks slower if moving faster (physically). That was proven with an atomic clock. Now, I’ll assume you understand $$ {mathtt {E}} = { {mathtt {mc}}}^ { {mathtt {2}}}$$, but if you don’t, it’s Energy (belonging to said object) equals the mass of it, times the speed of light, squared. Energy=Mass*The speed of light, squared. So, Einstein calculated that light moves at roughly 186,000 miles per second.

Is there anything to gain from being rude?

There is nothing to be gained by being rude to people. :/

Does time move faster in space?

Then he says the general theory of relativity states that time is different to all observers. Then he gets the observations backward. It should be for the one moving near light speed his clock appears normal and outside of that zone the clocks would move faster. Those outside would observe their clock as normal and his as slow. If he said this, then the question might be answered a little, because you can see that the faster clocks move in space the slower they move thorough time.

Is it possible to travel back in time?

This means that travelling back in time is impossible as you would have to go faster than the speed of light.

How to calculate the average speed of a car?

Say you travelled a certain distance with a car or another vehicle and you want to calculate what its average speed was. The easiest way to do that would be by using the calculator above, but if you prefer, you can also do the math yourself. Either way, you need to know the distance to a satisfactory approximation, for which you can use a map (e.g. Google Maps) to measure the distance from point to point. Make sure you measure closely to the path you took, and not via a straight line, unless you travelled by air in which case that would be a good approximation. Of course, having a GPS reading of the distance would be more precise. Then you need to know the travel time. Make sure you subtract any rests or stops you made from the total trip duration.

How to calculate distance from speed?

where v is the velocity (average speed), t is the time and d is distance, so you can read it as Distance = Speed x Time. The result will depend on the unit of the speed metric, for example if speed is given in mph, the result will be in miles, if it is given in km/h, the result will be in kilometers. As usual, make sure that the time unit of the speed measure is the same as the time unit for the duration of the trip. Our distance calculator will sometimes output the distance in more than one unit, for your convenience.

How fast is 2450 miles?

Example: If you took a plane from New York to Los Angeles and the flight was 5 hours of air time, what was the speed of the plane, given that the flight path was 2450 miles? The answer is 2450 / 5 = 490 mph (miles per hour) average speed. If you want the result in km/h, you can convert from miles to km to get 788.58 km/h.

How to read speed?

where v is the velocity, d is the distance, and t is the time, so you can read it as Speed = Distance / Time. As noted above, make sure you convert the units appropriately first, or use our speed calculator which does that automatically. The resulting unit will depend on the units for both time and distance, so if your input was in miles and hours, the speed will be in mph. If it was in meters and seconds, it will be in m/s (meters per second).

How many miles did a truck cover in 4 hours?

Example: If a truck travelled at an average speed of 80 km per hour for 4 hours, how many miles did it cover in that time? First, calculate 80 * 4 = 320 km, then convert km to miles by dividing by 1.6093 or by using our km to miles converter to get the answer: 198.84 miles.

What does the number on a speedometer mean?

So, what does the number your speedometer indicates really mean? That is your instantaneous speed; your speed at this exact moment. According to the textbook definition, the instantaneous speed is the change in object position, x, between two times, t? and t? (where this time interval approaches zero, i.e., t? – t? -> 0).

What is the fastest animal on earth?

You’ve probably heard that the fastest animal on the land is the cheetah, and it is true. Its maximum speed is really incredible, and, according to the latest research, it can reach speeds of up to 58 mph! Another amazing example is the peregrine falcons. They can reach speeds exceeding… 200 mph in air! In water, the fastest animal is the atlantic sailfish – 68 mph in water.

What is the unit of measurement for mph?

Typical units are kilometers per hour (kph), miles per hour (mph), meters per second (m/s) and feet per second (ft/s). In our mph calculator the default unit is mph (kph for metric-units countries), but you can change between any of the common units.

How to tell how far you can drive in an hour?

You are driving along the long, open highway. You glance down at the speedometer of your car; it reads 100 kilometers per hour. From this, you know how far you will drive if you keep the speed constant. We know that, in practice, keeping the speed exactly constant is almost impossible (although, on a highway with cruise control, it is nearly possible), and our speed fluctuates all the time, more or less. The actual distance you travel in an hour is the average of all these speeds. Conclusion – the average speed is the total distance traveled in a unit of time (e.g., in an hour).

How is speed related to time?

Everything about speed is related to distance and time. The units of speed are specified by traveled distance units divided by units of time, and that is the general idea of speed. In a more simple way – speed is the distance traveled per unit of time.

How fast can light travel?

Light moves at the speed of 299 792 458 meters per second, what approximately gives 300 000 kilometers per hour or 186 000 miles per second. The time it takes for the light from the Sun to reach the Earth is around 8 minutes.

What is the definition of velocity?

Velocity – how fast an object is travelling in a certain direction.