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• maths is all around us.

• It's almost impossible to think of something that's made without the help of mathematics, buildings, transport, technology, medicine, even clothes and food.

• All rely on numbers, measurements and sums.

• Since man first looked to the stars, we have dreamed of exploring worlds beyond our own.

• In the last century, the space age began as first satellites were launched into space, followed by animals, humans and now entire space stations.

• But it's extremely difficult to leave our planet and enter space, requiring complex math to calculate the massive amount of opposing force to escape the earth's gravity.

• Just try to jump upwards.

• That force pushing you back to Earth is gravity.

• One projectile that can create enough energy to beat gravity is the rocket.

• Early rockets were wild, inaccurate and almost impossible to control.

• Modern rockets, however, rely on complex maths to reach space.

• Rockets gain speed.

• No Nas thrust by igniting backfiring gasses from the rocket engine, creating a huge explosion.

• This force generates more kinetic energy than Earth's.

• Gravity Thrust propels the rocket into the air fast enough to escape the speed required to do.

• This is around 11 kilometers per second or over 40 0 kilometers per hour.

• That's around 120 times the takeoff speed of a jumbo jet.

• Using mats, scientists can calculate the amount of fuel that's needed to create enough thrust to escape Earth's gravity.

• The quantity of fuel needed depends on both the weight of the rocket on the cargo or payload that it carries.

• But these calculations are dependent on gravity and the bigger the planet, the greater the force.

• A rocket launching from Saturn, for example, would need to reach 35.6 kilometers per second, while in zero gravity, the tiniest amount of thrust would propel the rocket a very long way as there would be no force to stop it.

• Precise mathematics is also needed in order to steer the rocket in the right direction.

• With such high speed travel, even the smallest error could result in a rocket straying thousands of kilometers off course.

• Nowadays, computers calculate and control space travel, but the Apollo 11 mission in 1969 relied on less powerful technology than the average modern smartphone.

• Imagine what clever mathematics was used to get those first astronauts to land safely on the moon.

• Maths has conquered our planet and made space travel a reality.

• Who knows what the future holds?

• There's almost no limit to the ways that maths benefits humanity.

maths is all around us.

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# How Does A Rocket Escape Earth's Gravity

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林宜悉 posted on 2020/10/29
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