My first project

Transcript

00:00

Physics Art Integrated Project.

00:01

"The laws of physics is the canvas God laid down on which to paint his masterpiece".

00:08

"Hii, I am Disha "

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topic

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" Hii , I am arushi''

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GRAVITATIONAL

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Topic

00:14

why is that whatever we throw in the air have to came back? why every thing can't float in air ?

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i know i know .. so look in this universe every object attracts every other object with a force which holds the universe together.. and the name of this woderful amazing force is Gravitational Force .

00:24

Ohh... tell me more about it.. what is it ? who found it? and somethinng more interesting about it.

00:28

Gravity is a force of attraction that pulls together all matter (anything you can physically touch). The more matter something has, the greater the force of its gravity. The gravitational pull of an object depends on how massive it is and how close it is to the other object.

00:34

ohh... so do you mean that big objects like planets and stars have a stronger gravitational pull which means the gravity of the sun keeps earth in orbit around it, keeping us at a comfortable distance.

00:38

yessss!!! that's what i meant. Now let's see it's amusing history.

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Let's see how it was discovered!!

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in 1666 , Isaac Newton was first who described the force of gravity by mathematically, creating Newton's Laws of Universal Gravitation. it is said that his ideas about gravity were inspired by watching an apple fall from a tree. Newton wondered what force made the apple fall downward instead of simply floating away.

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Now you know that gravity keeps us earthbound. so to escape its pull and leae our planet far behind, we need to travel at an incredible 7 miles (11km)per second (about 24,900 miles[40,000km] per hour.

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This no. is called earth's "escape velocity'. To travel that fast, you would have to be a superhero!! NO just joking!!! To reach such speeds calls for the power of a rocket.

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USING SPACE

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Satellites look at the earth.

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To look out at the stars

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Monitoring the environment

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Searching for oil & minerals

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SPACE  JUNK