Kinetic energy

Kinetic energy

Kinetic energy

06/22/16

“What quantity can we give to a moving object?”

As discussed earlier, energy exists in all kinds of forms, but we want to to be specific, how exactly do we define the energy of a moving object? We call this quantity Kinetic energy. Kinetic energy is a measurement of energy of a

A young physicist might have two questions on their mind. First of all, how what quantity can we give to a moving object, and how can we apply the idea of energy to a moving system? Well, more seasoned veterans of science have already debated and answered the question, with the end result being kinetic energy. Kinetic energy is the quantity of energy associated with a moving object. The unit for Kinetic energy (here on will be abbreviated as K.E) is the Joule, and the formula is K.E = 1/2 * m *v2, with m being the mass of the object and v being the velocity. From this relationship, we can notice an interesting relationship, when the velocity of an object increases, the kinetic energy will increase to the square of the difference! For example, if an object goes twice as fast than another object of the same mass, then it will have four times as much kinetic energy.

Furthermore, the Kinetic energy of an object is directed related to the work that was done on to the object. We can put this numerically as F*d=1/2 * m*v2, Where F is force and d is distance. This means that by knowing the work done to an object, we can find the change in kinetic energy, and if we know the mass, the we can use this to find the change in velocity! On top of this, due to the conservation of energy, K.E can be transferred into all sorts of other forms of energy, such as potential energy.

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