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Basics Of Physics Essay

980 words - 4 pages

Kinetic energy is energy that an object or person possesses as a result of movement. Mathematically, it can be shown as half the object's mass multiplied by its speed squared.The kinetic energy of an object is given by the equation:Ek = ½mv 2Where m represents mass and v represents the speed of the object or person.There are many forms of kinetic energy, and they are:Vibrational: The energy resulting from vibrational motion.Rotational: The energy resulting from rotational motion.Translational: The energy resulting from motion of one location to another.Kinetic energy is a scalar quantity because it is merely a magnitude without a direction.Gravitational Potential Energy (Ug) is energy an object has because of its position in a gravitational field. The gravitational potential energy of an object is dependent on two variables:- The mass of the object- The height to which the object is raisedThe higher the object is lifted, the greater the gravitational potential energy will be.The gravitational potential energy of an object is given by the equation:Ug = mghWhere Ug is the symbol for gravitational potential energy, m represents mass in kilograms, g represents the acceleration of gravity in metres per second squared, and h represents the height of the object in metres.Both Kinetic and Gravitational potential energy are measured in Joules, or kg m2/s2 using the standard metric system.Kinetic energy can be passed from one object to another. For example, when you play bowling, you roll the ball down the lane, thus, giving it kinetic energy. When the bowling ball collides with one of the ten pins, it slows down and passes the kinetic energy onto the pins, which in turn hits another and passes it on.Gravitational potential energy is the energy stored in an object as a result of its vertical position. For example, the tabletop has zero height, so a basketball lying on top of it will have no potential energy at all, since the potential energy is based on its height relative to the tabletop. When you bounce the ball on the tabletop, you can find its potential energy by measuring the mass of the ball and the height to the tabletop at which it is bounced. A doubling of the height will result in a doubling of the gravitational potential energy.Elastic potential energy is Potential energy which is stored as a result of the disfiguration of an elastic object. Hooke's law states that it takes about twice as much force to pull an elastic object twice as far. One example of Elastic Potential Energy is a spring. In order to stretch a spring, it will take twice as much force.Another example is a rubber band, to stretch a rubber band you have to use energy. By stretching it, the energy has turns into elastic potential energy. To retrieve that energy, just let go of the rubber band and its potential energy is basically converted into kinetic energy.There are many more different types of energy. These are just a...

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