Newton gave out three laws which laid the foundation for the classical mechanics. The laws collectively describe the relationship between the body and the forces that act upon it along with its motion in response to the forces.
Have you ever thought what causes the temperature change? What does air pressure mean or why it happens? Why do two gases diffuse very fast into each other? It’s because of the kinetic energy of the molecules present in gases.
Movement is a part of our day-to-day lives. But what is it that measures our movement? It’s momentum. In Physics, Momentum refers to the quantity of motion that an object has. It can be defined as “mass in motion”. Any slightest of object that has mass and moving is said to have momentum. The higher the momentum of the body, the higher force is required in the negative direction to stop it. We might have heard a person is on roll. It means, in an ironic way, if a person has gained momentum its difficult to bring him down.
IMPORTANT UNITS OF MEASUREMENTS density, electric charge, electric current, force, frequency, length, mass, measurements, power, pressure, speed, stress, temperature, time, velocity.