Sunil Batra Solutions for Chapter: Motion, Exercise 1: Formative Assessment

A boy goes to market at an average speed of $29 \mathrm{km} {\mathrm{h}}^{-1}$. Finding the market closed, he immediately returns back by the same path with an average speed of $40 \mathrm{km} {\mathrm{h}}^{-1}$. Find the average velocity for the complete journey.

A boy goes to market at an average speed of $29 \mathrm{km} {\mathrm{h}}^{-1}$. Finding the market closed, he immediately returns back by the same path with an average speed of $40 \mathrm{km} {\mathrm{h}}^{-1}$. If the boy covers half the path during his return journey, find the average speed and average velocity.

What does the slope of $v-t$ graph indicate?

What does the area under $v-t$ graph indicate?

What are the uses of graphs?

What does the slope of $d-t$ graph indicate? Here $d$ stands for distance.

Velocity$-$time graph of a body is parallel to time axis. What is the acceleration of the body?

Derive equations of motion by two different methods.