How do objects move in space? Detailed answer

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How do objects move in space? Detailed answer

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How do objects move in space?

Gravity is the force that attracts one object to another in the universe. This is the force that makes space objects move towards the Earth.

It was not until the time of Galileo Galilei (1564-1642) that attempts were made to determine the magnitude of gravity. Until that time, it was believed that the speed with which a falling object hits the surface of the Earth depends only on the weight of this object.

Galileo threw objects of various weights from a falling tower in the Italian city of Pisa in order to study the effect of the "force" of gravity on them. He proved that heavy and light objects thrown down together reach the Earth's surface at the same time.

He made the ball roll down the slope, measuring its position at certain intervals of time. Galileo discovered that the increase in the speed of a ball is proportional to its time of motion. This means that by the end of the second second he was moving twice as fast as at the end of the first, by the end of the third - three times as fast, and so on.

He also calculated that the distance traveled by the ball is proportional to the square of the time of its movement (the square of the number is obtained by multiplying this number by the same value), that is, by the end of the second second, the ball traveled a distance four times greater than at the end of the first second, at the end of the third - nine times more, and so on.

Isaac Newton continued discoveries in the field of gravity. He suggested that the force that attracts an object to the Earth decreases with increasing distance between the Earth and the object. As a result of experiments and observations, Newton derived the law of universal gravitation. The main provision of the law is that if the mass (amount of matter) of one of the attracting objects doubles, the force of gravity also doubles, but if the distance between the objects doubles, the force of attraction will be one-fourth of the original value.

Albert Einstein tried to answer the question "What is gravity?" by proving that space-time has four dimensions. This is a very complex theory that requires deep scientific knowledge for its understanding. According to his latest theory, the gravitational field is connected by electric, magnetic and electromagnetic fields. However, it should be noted that to date no one has proposed a definition of gravity that would satisfy everyone.

However, we do know that the increase in speed caused by gravity is 10 m every subsequent second. This means that the speed of a falling object increases by 10 m/s every second. At the end of the first second, the falling speed is 10 m/s, at the end of the second it is 20 m/s, and so on. If at the end of the first second the falling object flies 5 m, then at the end of the second - 20 m, at the end of the third - 45 m.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

Which company recycles old sneakers into material for new sports fields?

In the early 1990s, Nike launched the Reuse-A-Shoe program, which continues to this day. It consists in recycling old sneakers, which are accepted by special points in the USA and many other countries, into material for sports fields. Each of the three parts of the shoe is recycled separately: the shredded rubber soles become running tracks, the foam midsole becomes tennis courts, and the fabric becomes basketball courts.

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