When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body.

When one body exerts a force on a second body, the second body simultaneously exerts a force equal in magnitude and opposite in direction on the first body. (whale.to)

submitted 6.5 years ago by New_goat

7 comments

JPG Open

ardvarcus 6.5 years ago

A rocket doesn't need to "push against" anything -- that's why they use them in space, where there is nothing to push against.

link

Frankenblock 6.5 years ago

Fire extinguishers

Didn't you see wall-e

link

Thetiedyeguy 6.5 years ago

This is somthing you can test at home though, you can buy a vacume bell and have a tiny hot wheels cart with a tiny remote activated valve and a wee little co2 canister or some shit. See if that little vehicle get propelled by expanding gas or if the moon landing was just a meme.

link

clapper900 6.5 years ago

Maybe you're onto something, retard.

link

Mike_Foster 6.5 years ago

Where does a balloon it its lift from? What is being displaced?

link

ideologicidal 6.5 years ago

The rapid expansion of gas (one body) from the combustion of fuel pushes against the bell of the thruster (second body), forcing the two bodies apart.

link

thelma 6.5 years ago

So your argument is that since space is void of matter, expelling gas from the rear of the vehicle would not result in forward movement ?

link