Question

Explain kinetic energy

Answer 1

Answer:

        Kinetic energy is the energy an object has because of its motion.

• Applying a force requires us to do work. After work has been done, energy has been transferred to the object, and the object will be moving with a new constant speed. The energy transferred is known as kinetic energy, and it depends on the mass and speed achieved.
• To Calculate Kinetic Energy , here's the Formula .

                  K.E. = 1/2 mv²

Where K.E. = Kinetic Energy of the Object

               m = Mass of the Object

               v = Velocity of the Object

• Net Work Done is also can be Found by the Change of Kinetic Energy

           W = ΔK.E.     ( W = Net work Done )

Some Facts About K.E. :-

• When the velocity of an object doubles, its kinetic energy quadruples.
• Kinetic energy must always be either zero or a positive value. While velocity can have a positive or negative value, velocity squared is always positive.

• Kinetic energy is not a vector quantity .

 For Example ,  A tennis ball thrown to the right with a velocity of 5 m/s, has the exact same kinetic energy as a tennis ball thrown down with a velocity of 5 m/s.

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Answer 2

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Kinetic energy is important as a tool in the macroscopic world. It is one of the ways in which we relate mass and motion and force to describe the state of an object and predict its interactions with the rest of the world. Kinetic energy is important as a tool in the macroscopic world.