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Laws of Motion
Question
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A body is moving with momentum 12 Ns in a free space. How much force is required to keep the body moving with constant momentum?

Answer

The body is moving with a constant momentum. Force is required only if the momentum has to be changed. So, here the force is equal to zero. 

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Some More Questions From Laws of Motion Chapter

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?

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Which law of motion is the real law of motion?

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