i would like to give an example...
take a torpedo and a missile into consideration, which are to move and hit a target underwater. Both work on the principle of action and reaction. Missile uses the force generated my compressed air while the torpedo has a fan at the back to push it forward...
wont the rotation of the blades of the fan create a force which might push the fan backwards...
Newtons law TO EVERY ACTION THERE IS AN EQUAL AND OPPOSITE REACTION...
if a fan with a battery is placed in space outside Earth and if it is switched on...
then what will happen?
will the fan go ahead, behind or will it remain at the same position?