what is motion?
what is acceleration?
Answers
Acceleration, rate at which velocity changes with time, in terms of both speed and direction. A point or an object moving in a straight line is accelerated if it speeds up or slows down.
Motion on a circle is accelerated even if the speed is constant, because the direction is continually changing.
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Explanation:
Motion is the state in which a body changes its position with respect to time and position
Acceleration :- The rate of change in velocity
Motion is the action of changing location or position. The study of motion without regard to the forces or energies that may be involved is called kinematics. It is the simplest branch of mechanics. The branch of mechanics that deals with both motion and forces together is called dynamics and the study of forces in the absence of changes in motion or energy is called statics.
The term energy refers an abstract physical quantity that is not easily perceived by humans. It can exist in many forms simultaneously and only acquires meaning through calculation. Informally, a system possesses energy if it has the ability to do work. The energy of motion is called kinetic energy.
Whenever a system is affected by an outside agent, its total energy changes. In general, a force is anything that causes a change (like a change in energy or motion or shape). When a force causes a change in the energy of a system, physicists say that work has been done. The mathematical statement that relates forces to changes in energy is called the work-energy theorem.
When the total of all the different forms of energy is determined, we find that it remains constant in systems that are isolated from their surroundings. This statement is known as the law of conservation of energy and is one of the really big concepts in all of physics, not just mechanics. The study of how energy changes forms and location during physical processes is called energetics, but the word is used more by scientists in fields outside of physics than inside.