Video2

= Video 2: The Elegant Universe Einstein's - Relativity =
 * Super! Heudes** 7pts

What is gravity?
The gravity is the acceleration that an object experiment when it approaches a planet or satellite. When we consider the mass of the object, we can call the interaction of this mass and gravity, gravitational force.

Who discovered it?
It was discovered by Isaacs Newton.

How does the Einstein’s Relativity Theory relate with gravity?
Well, it has a stretched relation because, Einstein reformulate that theory demonstrating in his Relativity Theory, that the gravity is a acceleration that causes an interference in the plane of the space and time.

Mention five words you might find in the video
Space, time, gravity, force, acceleration.

1. Which of the words in the question above did you find in the video? List them
All the words were mentioned in the video.

2. What was the embarrassing secret Newton was holding about gravity?
The embarrassing secret was, that Newton in that time, didn’t know how the gravity actually works, and in his studies he never consider the speed of light like a speed limit in the universe, idea published by Einstein in 1915.

====3. The narrator presents some examples in the video. What happens in the first one? What happens to the sun and planets? Explain ==== In the first example the narrator exposes a catastrophic situation when the sun disappears instantaneously. According t the Newton theories, when the sun disappears, the planets will be continuing its movement in straight line, according with first law of Newton: //“// An object at rest tends to stay at rest, or if it is in motion tends to stay in motion with the same speed and in the same direction unless acted upon by a sum of [|//physical forces//] .”

4. What happens in the second one? What happens to the sun and planets? Explain
In the second one, according with Einstein theories, how doesn’t exist anything that exceeds the speed limit, the gravitational force of the sun, travels with the speed of the light. The rays of the sun, gets the earth in 8 minutes. In fact, if the sun disappears instantaneously, we will feel and see the effects after 8 minutes, the sun disappears.

5. Why was Newton’s idea of gravity incorrect for Einstein?
Newton’s idea of gravity was incorrect for Einstein Because Newton doesn’t consider the speed of light and how the “forces” travel in the plane of the space and time.

6. What is the final definition of gravity given in the video?
The Gravity is an acceleration that travels over plane of the space and time with the form of waves with a speed likes the light.

7. What’s the name Einstein gave to it?
The name that Einstein gives to it was General Relativity

9. What’s the difference between Newton’s gravity and Einstein’s gravity?
Newton’s Gravity: Acts instantaneously and doesn’t have problem with the distance. Einstein’s Gravity: Travels in the plane of the space and time with the speed of light. It doesn’t act instantaneously, and consider the distance between the objects.