$A$ jet engine works on the principle of Newton's:

$A$ girl of mass $50\, kg$ jumps out of a moving boat of mass $300\, kg$ on to the bank with a horizontal velocity of $3\, m s^{-1}$. With what velocity does the boat begin to move backwards (in $, m s^{-1}$)?

State Newton's third law of motion. Give two examples.

The action-reaction forces:

$A$ gun recoils after firing to conserve

State whether the following statement is true or false:
Action and reaction act on the same body.