NCERT Solutions for Chapter: Motion and Time, Exercise 4: LONG ANSWER QUESTIONS

Given below in the figure is the distance-time graph of the motion of an object.

What will be the position of the object at $20 \mathrm{s}$?

Given below in the figure is the distance-time graph of the motion an object.

What will be the distance traveled by the object in $12 \mathrm{s}$?

Given below in the figure is the distance-time graph of the motion an object.

What is the average speed of the object?

Distance between Bholu's and Golu's house is $9 \mathrm{km}$. Bholu has to attend Golu’s birthday party at $7$ o’clock. He started from his home at $6$ o’clock on his bicycle and covered a distance of $6 \mathrm{km}$ in $40$ minutes. At that point he met Chintu, and he spoke to him for $5$ minutes and reached Golu’s birthday party at $7$o'clock. With what speed did he cover the second part of the journey? Calculate his average speed for the entire journey.

Boojho goes to the football ground to play football. The distance-time graph of his journey from his home to the ground is given below.

What does the graph between point $\mathrm{B}$ and $\mathrm{C}$ indicate about the motion of Boojho?

Boojho goes to the football ground to play football. The distance time graph of his journey from his home to the ground is given below.

Is the motion between $0$ to $4$ minutes uniform or non-uniform?

Boojho goes to the football ground to play football. The distance time graph of his journey from his home to the ground is given below.

What is his speed between $8$ and $12 \mathrm{minutes}$ of his journey?