- Can time machine be made?
- Are speed and distance directly proportional?
- What is the formula of distance?
- What is the unit of speed?
- Does time slow down at the speed of light?
- How does distance affect time?
- What’s the relationship between speed and distance?
- What is the relationship between speed distance and time taken?
- Can time be stopped?
- Does acceleration increase with height?
- Does anything travel faster than light?

## Can time machine be made?

Travelling in time might sound like a flight of fancy, but some physicists think it might really be possible.

BBC Horizon looked at some of the most promising ideas for turning this staple of science fiction into reality.

Ron Mallett has a dream: He wants to travel in time..

## Are speed and distance directly proportional?

If an object travels at a constant speed, then the distance traveled is directly proportional to the time spent traveling, with the speed being the constant of proportionality. The circumference of a circle is directly proportional to its diameter, with the constant of proportionality equal to π.

## What is the formula of distance?

Learn how to find the distance between two points by using the distance formula, which is an application of the Pythagorean theorem. We can rewrite the Pythagorean theorem as d=√((x_2-x_1)²+(y_2-y_1)²) to find the distance between any two points.

## What is the unit of speed?

The SI unit of speed is the metre per second, but the most common unit of speed in everyday usage is the kilometre per hour or, in the US and the UK, miles per hour. For air and marine travel the knot is commonly used.

## Does time slow down at the speed of light?

What is time? … Einstein’s theory of special relativity says that time slows down or speeds up depending on how fast you move relative to something else. Approaching the speed of light, a person inside a spaceship would age much slower than his twin at home.

## How does distance affect time?

distance does relate to time though. two objects going the same velocity but different distances require a different amount of time to complete. you can use the formula d=rt (distance = rate or speed * time). … interestingly enough, objects farther away from you will appear to move slower.

## What’s the relationship between speed and distance?

The speed is the time rate of change of the distance. If ‘D’ is the distance of an object in some time ‘T’, the speed is equal to, s = D/T. It has the same units as velocity. let us solve some examples, we will introduce the formulae as we go along.

## What is the relationship between speed distance and time taken?

The formula for speed is speed = distance ÷ time. To work out what the units are for speed, you need to know the units for distance and time. In this example, distance is in metres (m) and time is in seconds (s), so the units will be in metres per second (m/s).

## Can time be stopped?

The simple answer is, “Yes, it is possible to stop time. All you need to do is travel at light speed.” … We know that an object, or a light beam’s, speed measures the distance traversed over time.

## Does acceleration increase with height?

The acceleration of an object changes with altitude. … This means that gravitational acceleration is inversely proportional to the square of the distance from the centre of Earth. As the distance is doubled, the gravitational acceleration decreases by a factor of 4.

## Does anything travel faster than light?

The restriction that nothing can travel faster than light is not as limiting as it seems. … As another example, there are some distant stars in the universe that are moving away from each other at a speed faster than light. This is allowed because it is not a local speed.