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Use the equations for mechanical energy and work to show what is work and what is not. Make it clear why holding something off the ground or carrying something over a level surface is not work in the scientific sense.
Energy is an abstract scalar quantity associated with motion (kinetic energy) or arrangement (potential energy). Energy is not measured, it is computed.
The basic unit of energy is the joule. One joule is the amount of work done when a force of 1 newton acts over a distance of 1 m; thus 1 J = 1 N-m. The newton is the amount of force required to accelerate a 1-kg mass by 1 m/sec 2, so the basic dimensions of the joule are kg m 2 s –2.
The formula for the energy of motion is KE = .5 × m × v2 where KE is kinetic energy in joules, m is mass in kilograms and v is velocity in meters per second, squared.
E = mc^2, equation in Einstein’s theory of special relativity that expresses the equivalence of mass and energy.
Energy (from Ancient Greek ἐνέργεια (enérgeia) 'activity') is the quantitative property that is transferred to a body or to a physical system, recognizable in the performance of work and in the form of heat and light.
The formula for Energy: Kinetic Energy: The energy exists due to the motion of an object is known as Kinetic Energy. For example, a moving van, flowing water, etc. K. E. = 12 × m × v2. Where, Potential Energy: This is the energy stored in an object due to its position and height. It is measured by the amount of work done.
Explain how the general definition of energy as the ability to do work makes perfect sense in terms of either form of mechanical energy. Discuss the law of conservation of energy and dispel any misconceptions related to this law, such is the idea that moving objects just slow down naturally.
The energy of motion is called kinetic energy. It can be computed using the equation K = ½mv² where m is mass and v is speed.
use the following equation: Energy in the gravitational potential energy store (Ep) = mass (m) x gravitational field strength (g) x height (h) \(Ep = m \times g \times h\)