Video2

Good 6pts Video 2: The Elegant Universe Einstein's - Relativity

What is gravity?

 * gravity**, is a n atural phenomenon by which physical bodies attract with a force proportional to their mass.

How does the Einstein’s Relativity Theory relate with gravity?
these are related. due to that theory of relativity says that bodies attract each other. 

Mention five words you might find in the video
relativity, gravity, gravitation, physics, mathematics

**During watching and after watching **
==== 1. Click on the following link to watch the video: ==== ==== [] ====

2. Which of the words in the question above did you find in the video? List them

3. What was the embarrassing secret Newton was holding about gravity?
The secret was that Newton did not know how gravity works in reality and also did not know that the body couldn´t exceed the speed of light.

====4. The narrator presents some examples in the video. What happens in the first one? What happens to the sun and planets? Explain ====

the narrator says that if the sun disappears would be a catastrophe. in the first example the planets fly off and get out of its orbit. According to Newton these effects would be felt immediately.

5. What happens in the second one? What happens to the sun and planets? Explain
the narrator exposes the same, only now, according to Einstein the planet takes 8mimiutos to leave his orbit around the sun, because that is the time it takes light to reach earth.

6. Why was Newton’s idea of gravity incorrect for Einstein?
Newton does not take into account the speed of light, according to Einstein's light takes 8 minutes to reach the earth and therefore the effects of the disappearance of the sun can not be felt immediately as newton says.

7. What is the final definition of gravity given in the video?
According to Einstein, the gravity is the acceleration that moving bodies on a surface space-time.

8. What’s the name Einstein gave to it?
the name is: General Relativity.

<span style="color: #c78bf8; font-family: Tahoma,Geneva,sans-serif; font-size: 15px;">9. What’s the difference between Newton’s gravity and Einstein’s gravity?
The difference is that Newton's theory is valid for bodies moving slowly in comparison with the speed of light and Einstein's theory is valid for all bodies that move to slow and with speed of light.