NCERT Solutions for Chapter: Motion, Exercise 1: Exercise

What is the correct unit for measuring the acceleration of a moving object?

An object moves the first half of the total distance with a speed of $2 \mathrm{m} {\mathrm{s}}^{-1}$ . If the average speed of the body is $3 \mathrm{m} {\mathrm{s}}^{-1}$, the speed of the body when it travelles the remaining distance is _____ $\mathrm{m} {\mathrm{s}}^{-1}$.

An athlete moves along a path PQRSTUVP, in $44$seconds as shown in the figure, then the average speed of the athlete is _____$\mathrm{m} {\mathrm{s}}^{-1}.$

The motion of a body is depicted graphically as shown in the given figure. Then

A body moves with a uniform speed of $10 \mathrm{km} {\mathrm{h}}^{-1}$ for $2 \mathrm{h}$. The average speed of the body is _____ $\mathrm{km} {\mathrm{h}}^{-1}$.

Distance versus time graph of an object is as shown in the figure. The average speed of the object is _____ $\mathrm{m} {\mathrm{s}}^{-1}$.

$1 \mathrm{km} {\mathrm{h}}^{-1}=$_____ $\mathrm{m} {\mathrm{s}}^{-1}.$

A boy dropped a ball from the top of a tower of height $125 \mathrm{m}$ then the average velocity of the ball at the end of $5 \mathrm{second}$ if it takes $5 \mathrm{s}$ to reach the ground _____$\mathrm{m} {\mathrm{s}}^{-1}$.