NCERT Solutions Class 9 Maths Chapter 9 Force And Laws Of Motion – Here are all the NCERT solutions for Class 9 Maths Chapter 9. This solution contains questions, answers, images, explanations of the complete Chapter 9 titled The Fun They Had of Maths taught in class 9. If you are a student of class 9 who is using NCERT Textbook to study Maths, then you must come across Chapter 9 Force And Laws Of Motion. After you have studied lesson, you must be looking for answers of its questions. Here you can get complete NCERT Solutions for Class 9 Maths Chapter 9 Force And Laws Of Motion in one place.
NCERT Solutions Class 9 Science Chapter 9 Force And Laws Of Motion
Here on AglaSem Schools, you can access to NCERT Book Solutions in free pdf for Science for Class 9 so that you can refer them as and when required. The NCERT Solutions to the questions after every unit of NCERT textbooks aimed at helping students solving difficult questions.
For a better understanding of this chapter, you should also see summary of Chapter 9 Force And Laws Of Motion , Science, Class 9.
| Class | 9 |
| Subject | Science |
| Book | Science |
| Chapter Number | 9 |
| Chapter Name |
Force And Laws Of Motion |
NCERT Solutions Class 9 Science chapter 9 Force And Laws Of Motion
Class 9, Science chapter 9, Force And Laws Of Motion solutions are given below in PDF format. You can view them online or download PDF file for future use.
Force And Laws Of Motion
Did you find NCERT Solutions Class 9 Science chapter 9 Force And Laws Of Motion helpful? If yes, please comment below. Also please like, and share it with your friends!
NCERT Solutions Class 9 Science chapter 9 Force And Laws Of Motion- Video
You can also watch the video solutions of NCERT Class9 Science chapter 9 Force And Laws Of Motion here.
Video – will be available soon.
If you liked the video, please subscribe to our YouTube channel so that you can get more such interesting and useful study resources.
Download NCERT Solutions Class 9 Science chapter 9 Force And Laws Of Motion In PDF Format
You can also download here the NCERT Solutions Class 9 Science chapter 9 Force And Laws Of Motion in PDF format.
Click Here to download NCERT Solutions for Class 9 Science chapter 9 Force And Laws Of Motion
Question & Answer
Q.1: Which of the following has more inertia:
(a) a rubber ball and a stone of the same size?
(b) a bicycle and a train?
(c) a five-rupees coin and a one-rupee coin?
Ans : Inertia is the measure of the mass of the body. The greater is the mass of the body; the greater is its inertia and vice-versa. (a) Mass of a stone is more than the mass of a rubber ball for the same size. Hence, inertia of the stone is greater than that of a rubber ball. (b) Mass of a train is more than the mass of a bicycle. Hence, inertia of the train is greater than that of the bicycle. (c) Mass of a five rupee coin is more than that of a one-rupee coin. Hence, inertia of the five rupee coin is greater than that of the one-rupee coin.
Q.2: In the following example, try to identify the number of times the velocity of the ball changes: “A football player kicks a football to another player of his team who kicks the football towards the goal. The goalkeeper of the opposite team collects the football and kicks it towards a player of his own team”.
Also identify the agent supplying the force in each case.
Ans : The velocity of the ball changes four times. As a football player kicks the football, its speed changes from zero to a certain value. As a result, the velocity of the ball gets changed. In this case, the player applied a force to change the velocity of the ball. Another player kicks the ball towards the goal post. As a result, the direction of the ball gets changed. Therefore, its velocity also changes. In this case, the player applied a force to change the velocity of the ball. The goalkeeper collects the ball. In other words, the ball comes to rest. Thus, its speed reduces to zero from a certain value. The velocity of the ball has changed. In this case, the goalkeeper applied an opposite force to stop/change the velocity of the ball. The goalkeeper kicks the ball towards his team players. Hence, the speed of the ball increases from zero to a certain value. Hence, its velocity changes once again. In this case, the goalkeeper applied a force to change the velocity of the ball.
Q.3: Explain why some of the leaves may get detached from a tree if we vigorously shake its branch.
Ans : Some leaves of a tree get detached when we shake its branches vigorously. This is because when the branches of a tree are shaken, it moves to and fro, but its leaves tend to remain at rest. This is because the inertia of the leaves tend to resist the to and fro motion. Due to this reason, the leaves fall down from the tree when shaken vigorously.
Q.4: Why do you fall in the forward direction when a moving bus brakes to a stop and fall backwards when it accelerates from rest?
Ans : Due to the inertia of the passenger Every body tries to maintain its state of motion or state of rest. If a body is at rest, then it tries to remain at rest. If a body is moving, then it tries to remain in motion. In a moving bus, a passenger moves with the bus. As the driver applies brakes, the bus comes to rest. But, the passenger tries to maintain his state of motion. As a result, a forward force is exerted on him. Similarly, the passenger tends to fall backwards when the bus accelerates from rest. This is because when the bus accelerates, the inertia of the passenger tends to oppose the forward motion of the bus. Hence, the passenger tends to fall backwards when the bus accelerates forward.
Q.5: If action is always equal to the reaction, explain how a horse can pull a cart.
Ans : A horse pushes the ground in the backward direction. According to Newton’s third law of motion, a reaction force is exerted by the Earth on the horse in the forward direction. As a result, the cart moves forward.
NCERT / CBSE Book for Class 9 Science
You can download the NCERT Book for Class 9 Science in PDF format for free. Otherwise you can also buy it easily online.
- Click here for NCERT Book for Class 9 Science
- Click here to buy NCERT Book for Class 9 Science
All NCERT Solutions Class 9
- NCERT Solutions for Class 9 English
- NCERT Solutions for Class 9 Hindi
- NCERT Solutions for Class 9 Maths
- NCERT Solutions for Class 9 Science
- NCERT Solutions for Class 9 Social Science
- NCERT Solutions for Class 9 Sanskrit
All NCERT Solutions
You can also check out NCERT Solutions of other classes here. Click on the class number below to go to relevant NCERT Solutions of Class 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12.
| Class 4 | Class 5 | Class 6 |
| Class 7 | Class 8 | Class 9 |
| Class 10 | Class 11 | Class 12 |
Download the NCERT Solutions app for quick access to NCERT Solutions Class 9 Science Chapter 9 Force And Laws Of Motion. It will help you stay updated with relevant study material to help you top your class!
The post NCERT Solutions for Class 9 Science Chapter 9 Force And Laws Of Motion appeared first on AglaSem Schools.
from AglaSem Schools https://ift.tt/3zg0t6P
https://ift.tt/eA8V8J https://ift.tt/eA8V8J
إرسال تعليق