Chapter 5 Laws of motion
Chapter 5 Laws of motion QUESTIONS FROM TEXTBOOK Question 1. Give the magnitude and direction of the net force acting on (a) a drop of rain falling down with a constant speed, (b) a cork of mass 10 g floating on water, (c) a kite skilfully held stationary in the sky, (d) a car moving […]
Chapter 4 Motion in a plane
Chapter 4 Motion in a plane QUESTIONS FROM TEXTBOOK Question 1. State, for each of the following physical quantities, if it is a scalar or a vector: volume, mass, speed, acceleration, density, number of moles, velocity, angular frequency, displacement, angular velocity. Answer: Scalars: Volume, mass, speed, density, number of moles, angular frequency. Vectors: Acceleration, velocity, displacement, angular […]
Chapter 3 Motion in a Straight Line
Chapter 3 Motion in a Straight Line Question 1. In which of the following examples of motion, can the body be considered approximately a point object. (a) A railway carriage moving without jerks between two stations. (b) A monkey sitting on top of a man cycling smoothly on a circular track. (c) A spinning cricket […]
Chapter 2 Units and Measurements
Chapter 2 Units and Measurements Question 1. (a) The volume of a cube of side 1 cm is equal to…………m3. (b) The surface area of a solid cylinder of radius 2.0 cm and height 10.0 cm is equal to ……..(mm)2. (c) A vehicle moving with a speed of 18 km h-1 covers ………. m in 1 […]
Chapter 1 Physical World
Chapter 1 Physical World Question 1. Some of the most profound statements on the nature of science have come from Albert Einstein, one of the greatest scientists of all time. What do you think did Einstein mean when he said: “The most incomprehensible thing about the world is that it is comprehensible”? Answer: The whole of […]