action and reaction force
action and reaction force 有咩關係???
同埋介紹 action and reaction in a rocket launch
- 天同Lv 78 years agoFavorite Answer
Action and reaction are described by Newton's Third Law. It says:" For every action, there is an equal (in magnitude) and opposite (in direction) reaction."
Notice that action and reaction forces act on different bodies, they do not act on the same body.
In a rocket launch, the hot gas produced in the rocket engine is expelled out at the tail of the rocket, this is an action force which forces the gas out. The reaction force, that is equal in magnitude but opposite in direction, pushes the rocket to lift up.
Hence, the action force acts on the exhausted gas, whereas the reaction force acts on the rocket.
- 「本週之星」Lv 78 years ago