Physics
Why does a cannon recoil after firing ?

Conservation of energy
Backward thrust of gases produced
Newton's third law of motion
Newton's first law of motion

ANSWER DOWNLOAD EXAMIANS APP

Physics
Conservation of energy refers to the fact that

Energy cannot be created or destroyed but can be converted from one form to another
No chemical reaction is 100 percent efficient
The entropy of the universe is always increasing
If you conserve energy you will not be as tired

ANSWER DOWNLOAD EXAMIANS APP