Chapter 2 part 2 : Force and Law of motion class 9 solution
Very Short Answer Type Questions Answers to Physics Questions 1. Which physical quantity corresponds to the rate of change of momentum? Answer: Force. 2. State the relation between the momentum of a body and the force acting on it. Answer: According to Newton's Second Law of Motion, the rate of change of momentum of a body is directly proportional to the force acting on it and occurs in the same direction as the force. Mathematically, F = dp/dt, where F is the force, p is the momentum, and t is time. 3. What is the unit of force? Answer: The SI unit of force is the newton (N) . 4. Define one newton force. Answer: One newton is the force required to produce an acceleration of 1 meter per second squared in a mass of 1 kilogram. It can be represented as 1 N = 1 kg * m/s². 5. What is the relationship between force and acceleration? Answer: According to Newton's Second Law, the acceleration of an object is directly proportional to the net force acting on it an...