Rocket Science!

Ever want to know what it's like to be a rocket scientist? Learn some of the basics of rockets to impress your friends.

License: Creative Commons BY-NC-SA

[helio]

"Ah, come on. You can learn this. It's not *rocket science* after all."

[pierrefertil]

And my city grade teacher said rocket science was not easy

[donaldlokken]

I just love the explanation. You even help me to remember the equation for Momentum. Science rules!!!

[roshanskywalker]

"Congratulations man for 1k likes ", before 999 likes i give you 1 like 👍, because YouTube have only one like button .

[mekodono]

comment section full of paragraphs. I repeat full of essays and paragraphs. take cover.

[tapankumarbasu]

Good Video. Basic principle is Newton's Third law of motion. For going up one has to push it down vigorously. 

[KevinEontrainer]

Does that means if we're floating in space and throw a football forwards then we got pushed backwards??

[THE_MR_MAN]

cmon man it cant be that hard, it isn’t rocket science! (thanks though)

[malldvd]

I almost got hit with one of those model rockets once. good thing I was hiding under a bench...

[georgesparks]

Funny, I have never seen a rocket in true space, Van Allen Belt. couldn't be.

[FaizaanAkhundzadah]

come on guys its not hard its not rocket science

[INLF]

Nice video but in the end the rocket just disapears :/

[huyanhle]

A small research rocket of mass 250kg is launched vertically as part of a weather study. It sends out 50 kg of burnt fuel and exhaust gases with a velocity of 180 ms-1 in a 2 s initial acceleration period.
(a) What is the velocity of the rocket after this initial acceleration? (Answer v = 40 ms-1)
(b) What upwards force does this apply to the rocket? (Answer F = 4500N)
(c) What is the net upwards acceleration acting on the rocket? (Use g = 10 ms-2 if required) (Answer a = 10 ms-2)

[DoctorThomasElliot]

But You completely ignored Gravity?!?!?!? Gravity would be an external force on the system thus the rocket can not fly using this a

[psilocybemusashi]

this explanation is very inaccurate and doesn't really explain anything about how a rocket works. the basic formula is F=ma. The force of the rocket must be greater than the force of gravity before you get any momentum. gravity will constantly trying to reduce your velocity and you don't even consider it. this is like explaining the basics of how a car works by explaining wind resistance.

[varma]

Does the weight of the ball have anything to do with this effect? I mean will you see any difference if you push an air balloon, a football and a bowling ball? Does the person on ice feel the same push back if he trows a ping pong ball? Why don't we consider the weight of the ball in this equation?

[nasomty]

I think in order to do this you will need a tube with height equal to the height of the atmosphere !!
it's wawy diffuclt I think

[Woosh]

they are explaining conservation of momentum not gravity or net forces.

[sarahjordan]

This describes rocket science well and is great for middle school students and high school students

[richarddevalk]

so if im not wrong is this  m = momentum and v= velocity and what you add is that bigin letter for what its