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Laws of Motion
Question
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When a man jumps from a boat to the shore, the boat moves away from the shore. Why? 

Answer

When a man jumps from a boat to the shore, the boat slightly moves away from the shore.
This is due to the reason that when man jumps from boat, the man gets the momentum in forward direction and to conserve the momentum of system (man+boat) the momentum of boat should be equal and opposite to that of man.  

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Some More Questions From Laws of Motion Chapter

State Galileo’s law of motion.

Define inertia.

When the branches of an apple tree are shaken, the apples fall down. Why?

A person jumping out from a moving car or bus falls forward. Why?

Due to what type of inertia, the spark leaves the grind stone tangentially while sharpening the knife?

Which law of motion is also called law of inertia?

What is measure of inertia of body?

Which law of motion defines the force?

What happens to a stone tied to the end of string and whirled in a circle if the string suddenly breaks?

Which law of motion gives the quantitative knowledge of force?