Write the role of work, power and strength.
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Strength training is the functional application of Newton's second law of physics, which defines force as the product of a mass and its acceleration (Force = MA).
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work :a force is said to be work. when acting there is a displacement of the point in the direction of the force. for example : when the ball is held above the ground and dropped, the work done on the ball as it falls in equal to the weight of a ball.
power : power is the rate of doing work. the amount of energy transferred per unit time. having no direction, it is a scalar quantity. in the international system of unit the unit of power is joule per second (J/s),known as the watt in hour of James watt, the eightheenth century developer of the steam engine condenser. another common and traditional measure is horsepower. comparing to the power of horse. being the rate of work.
strength : the quality or state of being physically strong and the capacity of an object or substance to with stand great force or pressure. the potency, intensity or speed of a force or natural agency.
power : power is the rate of doing work. the amount of energy transferred per unit time. having no direction, it is a scalar quantity. in the international system of unit the unit of power is joule per second (J/s),known as the watt in hour of James watt, the eightheenth century developer of the steam engine condenser. another common and traditional measure is horsepower. comparing to the power of horse. being the rate of work.
strength : the quality or state of being physically strong and the capacity of an object or substance to with stand great force or pressure. the potency, intensity or speed of a force or natural agency.
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