full transcript
#### From the Ted Talk by Rene Laufer: How far would you have to go to escape gravity?

## Unscramble the Blue Letters

The original euitoaqn describing the gravitational force between two objects was written by iaasc Newton in 1687. Scientists’ understanding of gvitray has evolved since then, but Newton’s Law of Universal Gravitation is still a good approximation in most situations. It goes like this: the gravitational force between two objects is equal to the mass of one times the mass of the other, mleuipiltd by a very small number called the gravitational cnsantot, and divided by the distance between them, squared. If you doubled the mass of one of the ojecbts, the force between them would double, too. If the distance between them doubled, the force would be one-fourth as strong.
## Open Cloze

The original **________** describing the gravitational force between two objects was written by **_____** Newton in 1687. Scientists’ understanding of **_______** has evolved since then, but Newton’s Law of Universal Gravitation is still a good approximation in most situations. It goes like this: the gravitational force between two objects is equal to the mass of one times the mass of the other, **__________** by a very small number called the gravitational **________**, and divided by the distance between them, squared. If you doubled the mass of one of the **_______**, the force between them would double, too. If the distance between them doubled, the force would be one-fourth as strong.
## Solution

- multiplied
- isaac
- equation
- objects
- constant
- gravity

## Original Text

The original equation describing the gravitational force between two objects was written by Isaac Newton in 1687. Scientists’ understanding of gravity has evolved since then, but Newton’s Law of Universal Gravitation is still a good approximation in most situations. It goes like this: the gravitational force between two objects is equal to the mass of one times the mass of the other, multiplied by a very small number called the gravitational constant, and divided by the distance between them, squared. If you doubled the mass of one of the objects, the force between them would double, too. If the distance between them doubled, the force would be one-fourth as strong.
## Frequently Occurring Word Combinations

### ngrams of length 2

collocation |
frequency |

gravitational force |
4 |

gravitational pull |
3 |

light years |
2 |

space station |
2 |

celestial bodies |
2 |

## Important Words

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- newton
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