Is momentum a scalar or vector quantity?

Important Questions on Force and Laws of Motion

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 39

A body of mass $\text{'}\mathrm{m}\text{'}$ is moving with velocity $\text{'}\mathrm{u}\text{'}$. When a force is applied on it for time $\text{'}\mathrm{t}\text{'}$ its velocity increases to $\text{'}\mathrm{v}\text{'}$. Write expressions for initial and final momentum. Also write its SI unit.

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 39

A body of mass $\text{'}\mathrm{m}\text{'}$ is moving with velocity $\text{'}\mathrm{u}\text{'}$. When a force is applied on it for time $\text{'}\mathrm{t}\text{'}$ its velocity increases to $\text{'}\mathrm{v}\text{'}$. Write expressions for change in momentum. Also write its SI unit.

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 39

A body of mass $\text{'}m\text{'}$ is moving with velocity $\text{'}u\text{'}$. When a force is applied on it for time $\text{'}t\text{'}$ its velocity increases to $\text{'}v\text{'}$. Write expressions for rate of change of momentum. Also write its SI unit.

HARD

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 40

Total momentum of two bodies remains unchanged before and after the collision. Justify this statement.

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 41

A constant force acts on an object mass $5 \mathrm{kg}$ for a duration of $2 \mathrm{s}$. It increases the object's velocity from $3 \mathrm{m} {\mathrm{s}}^{-1}$ to $7 \mathrm{m} {\mathrm{s}}^{-1}$. Find the magnitude of the force applied. Now if the force were applied for a duration of $5 \mathrm{s}$, what would be the final velocity of the object?

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 42

During arm wrestling, participants put their arms on the table, and wrestle with the palms. If the force exerted by both the players is equal, where are balanced forces acting?

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 42

During arm wrestling, participants put their arms on the table, and wrestle with the palms. If the force exerted by both the players is equal, where is the action, reaction force pair acting?

MEDIUM

9th CBSE

IMPORTANT

Modern's abc+ Of Science - Physics For Class IX>Chapter 2 - Force and Laws of Motion>Summative Assessment Some Solved CBSE Sample Questions>Q 1

A particle of mass $0.2 \mathrm{kg}$ is kept at rest. A force of $2 \mathrm{N}$ acts on it for $2$ seconds. Find the distance moved by the particle in (i) these $2$ seconds and (ii) next $2$ seconds if the same force is continued to be applied.