MOTION

MOTION

VERY SHORT ANSWER TYPE QUESTIONS (VSAQ)

1. What is a reference point? Ans :- A reference point is a fixed location used to describe the position of an objec...

11. What is a reference point? Ans :- A fixed location used to describe the position of an object. 12. In the examp...

21. What is the relation between linear velocity and angular velocity Ans :- Linear velocity = Angular velocity x R...

31. What is non-uniform motion? Ans :- Non-uniform motion is when an object travels different distances in equal ti...

41. If a car travels 100 km in 2 hours, what is its average speed? Ans :- The average speed is 50 km/h. 42. What i...

SHORT ANSWER TYPE QUESTIONS (SAQ)

1. What is the importance of a reference point in describing motion? Ans :- A reference point is essential because i...

2. What is the difference between uniform velocity and non-uniform velocity? Ans :- 1. Uniform velocity: Uniform v...

3. Can you explain the different types of motion? Ans :- There are three main types of motion: circular motion, line...

4. What are the uses of a distance-time graph? Ans :- The uses of a distance-time graph are as follows: (a) It sh...

5. How do we recognize motion in our daily lives? Ans :- We recognize motion by observing changes in the position of...

6. What is the difference between distance and displacement? Ans :- Distance is the total path length traveled by a...

7. Why do we need a reference point when describing motion? Ans :- A reference point helps us determine the positio...

8. How can we describe the location of an object? Ans :- To describe where an object is located, we need a fixed p...

9. Can an object have distance covered and zero displacement? Ans :- How? Ans :- Yes, an object can cover dista...

10. What is the difference between uniform motion and non-uniform motion? Ans :- Uniform motion occurs when an obje...

11. How do we calculate average speed, and why is it useful? Ans :- To calculate average speed, we divide the tota...

12. Why is speed measured in different units like meters per second and kilometers per hour? Ans :- Speed is measur...

13. How do you calculate average velocity, and what does it represent? Ans :- Average velocity is calculated by divi...

14. What is acceleration, and how can it be positive or negative? Ans :- Acceleration measures the change in velocit...

15. What do you mean by average speed? Ans :- What are its units? Ans :- Average speed is the total distance c...

16. Under what condition(s) is the magnitude of the average velocity of an object equal to its average speed? Ans :-...

17. During an experiment, a signal from a spaceship reached the ground station in five minutes. What was the distance of...

18. When will you say a body is in (i) Uniform acceleration? Ans :- When an object moves in a straight line and its...

20. What is the nature of the distance time graphs for uniform and non-uniform motion of an object? Ans :- If an ob...

21. A bus starting from rest moves with a uniform acceleration of 0.1ms−2 for 2 minutes . Find (a) The speed acquired,...

22. A trolley, while going down an inclined plane, has an acceleration of 2cm s−2 . What will be its velocity 3s after t...

23. A racing car has a uniform acceleration of4ms−2 . What distance will it cover in 10s after start? Ans :- Given...

24. Define uniform velocity and uniform acceleration? Ans :- i. Uniform velocity:- An object is said to have unifo...

25. A body starts from rest and moves with a uniform acceleration of 4m/s2 until it travels a distance of 800m, find the...

26. What can you say about the motion of an object whose distance time graph is a straight line parallel to the time axi...

27. Define acceleration. Is it a scalar or a vector quantity? Ans :- In non-uniform motion, the speed of an object...

28. Give an example of a body that may appear to be moving for one person and stationary for the other. Ans :- Whe...

LONG ANSWER TYPE QUESTIONS (LAQ)

1. Discuss the concepts of distance and displacement, including their definitions, characteristics, and examples. Ans...

2. Explain the concepts of uniform motion and non-uniform motion, including how to calculate average speed and why it's...

NCERT SOLUTION

Page No. 74 1. An object has moved through a distance. Can it have zero displacements? If yes, support your answer with...

3. Which of the following is true for displacement? (a) It cannot be zero. (b) Its magnitude is greater than the dista...

Page No. 76 1. Distinguish between speed and velocity. Ans :- Speed is...

2. Under what condition(s) is the magnitude of the average velocity of an object equal to its average speed?...

Page No. 77 1. When will you say a body is in (i) Uniform acceleration (ii) Non-uniform acce...

2. A bus decreases its speed from 80 km h -1 to 60 km h -1 in 5 s. Find the acceleration of the bus. Ans :-...

3. A train starting from a railway station and moving with uniform acceleration attains a speed of 40 km/h-1 in 10 m...

Page No. 81 1. What is the nature of the distance-time graphs for uniform and non-uniform motion of an object? Ans :-...

2. What can you say about the motion of an object whose distance time-graph is a straight line parallel to the time ax...

3. What can you say about the motion of an object if its speed-time graph is a straight line parallel to the time axis?...

4. What is the quantity which is measured by the area occupied below the velocity-time graph? Ans :- The area unde...

1. A bus starting from rest moves with a uniform acceleration of 0.1 m s -2 for 2 minutes. Find (a) the speed acquir...

2. A train is travelling at a speed of 90 km h -1. Brakes are applied so as to produce a uniform acceleration of –0....

3. A trolley, while going down an inclined plane, has an acceleration of 2 cm s -2. What will be its velocity 3 s af...

4. A racing car has a uniform acceleration of 4 m s -2. What distance will it cover in 10 s after start? An...

5. A stone is thrown in a vertically upward direction with a velocity of 5 m s -1. If the acceleration of the stone...

Page No. 85 1. An athlete completes one round of a circular track of diameter 200 m in 40 s....

2. Joseph jogs from one end A to the other end B of a straight 300 m road in 2 minutes 30 seconds and then turns aro...

3. Abdul, while driving to school, computes the average speed for his trip to be 20 km.h–1. On his return trip along...

4. A motorboat starting from rest on a lake accelerates in a straight line at a constant rate of 3.0 m s -2 for 8.0...

7. A ball is gently dropped from a height of 20 m. If its velocity increases uniformly at the rate of 10 m s -2, wit...

9. State which of the following situations are possible and give an example for each of these: (a) an object with a...

10. An artificial satellite is moving in a circular orbit of radius 42250 km. Calculate its speed if it takes 24 hou...

SUMMARY

Intrioduction Imagine standing outside on a sunny day. You see birds soaring through the sky, fish swimming in the wat...

Describing Motion When we want to talk about where an object is located, we need to choose a starting point, which we ca...

What is Motion? An object is considered to be in motion when its position changes continuously compared to a fixed point...

Distance and Displacement 1. Distance: i. Distance is the total length of the path that an object travels from its s...

Uniform Motion and Non-Uniform Motion ❑ Understanding Motion: When an object moves along a straight line, we can cl...

Speed with Direction: Understanding Velocity ❑ What is Velocity? Velocity is the speed of an object in a specific...

What is Acceleration? Acceleration is a measure of how quickly the velocity of an object changes over time. It tells us...

Graphical Representation of Motion Graphs are simple tools that help us show important information clearly. For example...

Uniform Circular Motion ❑ What is Uniform Circular Motion? Uniform circular motion is when an object moves around i...