Define the term impulse.

Important Questions on Force and Laws of Motion

MEDIUM

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>Check Point 02>Q 5

A force of $50 \mathrm{N}$ acts on a body for $\frac{1}{10} \mathrm{s}$. Find the change in the momentum of the body.

MEDIUM

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>Check Point 03>Q 1

You are hurt when you kick a stone. Why?

MEDIUM

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>Check Point 03>Q 2

Which law of Newton is associated with propulsion of rocket?

MEDIUM

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>Check Point 03>Q 3

A object having a mass $2 \mathrm{k}\mathrm{g}$ and moving at $14 \mathrm{m} {\mathrm{s}}^{-1}$ collides with another object of mass $5 \mathrm{k}\mathrm{g}$ at rest and sticks to it. Find the speed of this combination.

MEDIUM

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>Check Point 03>Q 4

In which condition, law of conservation of momentum is applicable?

MEDIUM

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>Check Point 03>Q 5

When you step ashore from a stationary boat, it tends to leave the shore. Give reason.

EASY

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>CHAPTER EXERCISE>Q 1

The inertia of an object tends to cause the object

MEDIUM

9th CBSE

IMPORTANT

All In One SCIENCE CBSE Class IX>Chapter 9 - Force and Laws of Motion>CHAPTER EXERCISE>Q 2

A passenger in a moving train tosses a coin which falls behind him. It means that motion of the train is