Q.1. If the distance between two masses is increased by a factor of 4, by what factor would the mass of one of them have to be altered to maintain the same gravitational force? Q.2. The gravitational force between two objects is F. How will this force change when (i) distance between them is reduced … Read more
NEWTON’S LAWS OF MOTION NEWTON’S SECOND LAW OF MOTION Newton’s second Law of Motion states that The rate of change of momentum is directly proportional to the force applied in the direction of force. For example; when acceleration is applied on a moving vehicle, the momentum of the vehicle increases and the increase is in … Read more
[PDF] Download Problems Based on Equations of Motion for Class 9 Science EQUATIONS OF MOTION When an object moves along a straight line with uniform acceleration, it is possible to relate its velocity, acceleration during motion and the distance covered by it in a certain time interval by a set of equations known as the … Read more
Graphical Representation of Motion A graph represents the relation between two variable quantities in pictorial form. It is plotted between two variable quantities. The quantity that is varied our choice is called independent variable. The other quantity, which varies as a result of this change, is called dependent variable. For example, in distance-time graph, time … Read more
Extra Questions for Class 9 Science Chapter 13 Why Do We Fall Ill Here we are providing extra questions for class 9 science chapter 13 Why Do We Fall Ill. Various type of questions are provided. These includes very short answer type questions, short answer type questions and long answer type questions as well. These … Read more
Extra Questions for Class 9 Science Chapter 11 Work and Energy Here we are providing extra questions for class 9 science chapter 11 work and energy. Various type of questions are provided. These includes very short answer type questions, short answer type questions and long answer type questions as well. These questions are important for … Read more
Extra Questions for Class 9 Science Chapter 10 Gravitation Here we are providing extra questions for class 9 science chapter 10 gravitation. Various type of questions are provided. These includes very short answer type questions, short answer type questions and long answer type questions as well. These questions are important for exam as well. You … Read more