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Daily Practice Problems
Class 9 Science
Motion

Question 1:

Suppose a boy is enjoying a ride on a merry-go-round which is moving with a constant speed of 10 m/s. what does it implies with respect to boy?

(a) at rest

(b) moving with no acceleration

(c) in accelerated motion

(d) moving with uniform velocity

Question 2:

If the displacement of an object is proportional to square of time, then the object moves with

(a) uniform velocity

(b) uniform acceleration

(c) increasing acceleration

(d) decreasing acceleration

Question 3:

A body is thrown vertically upward with velocity u, the greatest height h to which it will rise is,

(a) u/g

(b) u2/2g

(c) u2/g

(d) u/2g

Question 4:

In which of the following cases of motions, the distance moved and the magnitude of displacement are equal?

(a) If the car is moving on straight road

(b) If the car is moving in circular path

(c) The pendulum is moving to and fro

(d) The earth is revolving around the Sun

Question 5:

The maximum speed of a train is 80 km/h. It takes 10 h to cover a distance of 400 km. Find the ration of its maximum speed to its average speed.

Question 6:

Starting from a stationary position, Rahul paddles his bicycle to attain a velocity of 6 m s–1 in 30 s. Then he applies brakes such that the velocity of the bicycle comes down to 4 m s-1 in the next 5 s. Calculate the acceleration of the bicycle in both the cases.

Question 7:

The brakes applied to a car produce an acceleration of 6 m s-2 in the opposite direction to the motion. If the car takes 2 s to stop after the application of brakes, calculate the distance it travels during this time.

Question 8:

What are inertial and non-inertial frames of reference?

Question 9:

Write some uses of velocity- time graph?

Question 10:

A stone is thrown in a vertically upward direction with a velocity of 5 m s-1. If the acceleration of the stone during its motion is 10 m s–2 in the downward direction, what will be the height attained by the stone and how much time will it take to reach there?

Question 11:

Give an example of a body which may appear to be moving for one person and stationary for the other.

Question 12:

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

Question 13:

A body starting from rest has an acceleration of 4 m/s2. Calculate distance travelled by it in 5th second.

Question 14:

Differentiate between distance and displacement.

Question 15:

Derive 1st equation of motion graphically?

Question 16:

Derive 2nd equation of motion graphically?

Question 17:

Derive 3rd equation of motion graphically?

Question 18:

What is the nature of the distance-time graphs for uniform and non-uniform motion of an object?

Question 19:

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

Question 20:

How can we describe the location of the object?

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## Problem-solving on Class 9 Science Motion NCERT Chapter 8 after learning a theoretical concept is crucial for several reasons:

1. Application of Knowledge: Problem-solving allows you to apply the theoretical concepts of the topic Class 9 Science Motion you have learned to real-life situations. It helps you bridge the gap between abstract knowledge and practical scenarios, making the learning more relevant and meaningful.
2. Understanding Deeper Concepts: When you encounter problems related to a theoretical concept that you learned in Class 9 Science Motion NCERT Chapter 8, you are forced to delve deeper into its intricacies. This deeper understanding enhances your comprehension of the subject and strengthens your grasp of the underlying principles.
3. Critical Thinking: Problem-solving encourages critical thinking and analytical skills. It requires you to analyze the problem, identify relevant information, and devise a logical solution. This process sharpens your mind and improves your ability to approach complex challenges effectively.
4. Retention and Recall: Actively engaging in problem-solving reinforces your memory and improves long-term retention. Applying the concepts learned in Motion Class 9 Science in practical scenarios helps you remember them better than passive reading or memorization.
5. Identifying Knowledge Gaps: When you attempt to solve problems, you may encounter areas where your understanding is lacking. These knowledge gaps become evident during problem-solving, and you can then focus on filling those gaps through further study and practice. You can refer Motion Class 9 Science Notes on LearnoHub.com
6. Boosting Confidence: Successfully solving problems after learning a theoretical concept boosts your confidence in your abilities to handle Motion. This confidence motivates you to tackle more challenging tasks and improves your overall performance in the subject.
7. Preparation for Exams and Challenges: Many exams, especially in science, mathematics, and engineering, involve problem-solving tasks. Regular practice in problem-solving prepares you to face these exams with confidence and perform well. It is also advised to take tests on Motion Class 9 Science Online Tests at LearnoHub.com.
8. Enhancing Creativity: Problem-solving often requires thinking outside the box and exploring various approaches. This fosters creativity and innovation, enabling you to come up with novel solutions to different problems.
9. Life Skills Development: Problem-solving is a valuable life skill that extends beyond academics. It equips you with the ability to tackle various challenges you may encounter in personal and professional life.
10. Improving Decision Making: Problem-solving involves making decisions based on available information and logical reasoning. Practicing problem-solving enhances your decision-making skills, making you more effective in making informed choices.

In summary, problem-solving after learning a theoretical concept on CBSE Motion Class 9 Science is an essential part of the learning process. It enhances your understanding, critical thinking abilities, and retention of knowledge. Moreover, it equips you with valuable skills that are applicable in academic, personal, and professional contexts.

You must have heard of the phrase “Practice makes a man perfect”. Well, not just a man, practice indeed enhances perfection of every individual.

Practicing questions plays a pivotal role in achieving excellence in exams. Just as the adage goes, "Practice makes perfect," dedicating time to solve a diverse range of exam-related questions yields manifold benefits. Firstly, practicing questions allows students to familiarize themselves with the exam format and types of problems they might encounter. This familiarity instills confidence, reducing anxiety and improving performance on the actual exam day. Secondly, continuous practice sharpens problem-solving skills and enhances critical thinking, enabling students to approach complex problems with clarity and efficiency. Thirdly, it aids in identifying weak areas, allowing students to focus their efforts on improving specific topics. Moreover, practice aids in memory retention, as active engagement with the material reinforces learning. Regular practice also hones time management skills, ensuring that students can allocate appropriate time to each question during the exam. Overall, practicing questions not only boosts exam performance but also instills a deeper understanding of the subject matter, fostering a holistic and effective learning experience.

All About Daily Practice Problems on Class 9 Science Motion NCERT Chapter 8

Our Daily Practice Problems (DPPs) offer a diverse range of question types, including Multiple Choice Questions (MCQs) as well as short and long answer types. These questions are categorized into Easy, Moderate, and Difficult levels, allowing students to gradually progress and challenge themselves accordingly. Additionally, comprehensive solutions are provided for each question, available for download in PDF format - Download pdf solutions as well as Download pdf Questions. This approach fosters a holistic learning experience, catering to different learning styles, promoting self-assessment, and improving problem-solving skills. With our well-structured DPPs, students can excel in exams while gaining a deeper understanding of the subject matter. Hope you found the content on Class 9 Science Motion NCERT Chapter 8 useful.

Last but not least, to get the best hold on Class 9 Science Motion NCERT Chapter 8, do not forget to check out:

• Motion Class 9 Science Best videos
• Motion Class 9 Science NCERT Solutions
• Class 9 Science Motion Revision notes