CHAPTER:7
FORCE AND LAW OF MOTION
date: 24/08/16
Q. Why does the boat moves backward when you
jump forward?
Newton third law of motion states that for every action there
is equal and opposite reaction .In this case when the man jumps out of the boat
,it exert force on boat this is the action ,as reaction the boat exerts equal force on the man thus ,the
boat moves backward and we are able to move forward.
Q. Why do the gun recoil when bullet fires?
When the bullet is fired it
moves suddenly ahead with a great velocity by a force which is applied by the
gun in the forward direction. According to Newton’s third law of motion the
bullet also applies an equal force in the opposite direction.
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