Amisha Singh Solutions for Chapter: Force and Laws of Motion, Exercise 1: Exercise

What is the other name for Newton’s first law of motion?

Is momentum a scalar or vector quantity?

Name the physical quantity whose unit is $\mathrm{k}\mathrm{g} \mathrm{m} {\mathrm{s}}^{-1}$.

What is the total momentum of the bullet and the gun before firing?

(Write the answer in words)

What name is given to the product of mass and velocity of a body?

Explain the terms 'balanced forces' and 'unbalanced forces' with suitable examples.

There are two types of forces $\mathrm{X}$ and $\mathrm{}\mathrm{Y}$. The forces belonging to type $\mathrm{X}$ can produce motion in a stationary object but cannot change the shape of the object. On the other hand, forces belonging to type $\mathrm{Y}\mathrm{}$ cannot produce motion in a stationary object but can change the shape of the object. What is the general name of the forces such as $\mathrm{X}$?

(Choose from: Balanced forces / Unbalanced forces)

There are two types of forces $\mathrm{X}$ and $\mathrm{}\mathrm{Y}$. The forces belonging to type $\mathrm{X}$ can produce motion in a stationary object but cannot change the shape of the object. On the other hand, forces belonging to type $\mathrm{Y}\mathrm{}$ cannot produce motion in a stationary object but can change the shape of the object. What is the general name of the forces such as $\mathrm{Y}$?