define kinetic energy
Answers
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energy which a body possesses by virtue of being in motion..
DEFINITION
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Kinetic energy is the energy possessed by a body in motion.
It can also be define as
Itis energy possessed by an object due to its motion or movement.
Motion is kinetic energy, moving things have kinetic energy.
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Some examples are :
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●when you are walking or running , your body is exhibiting kinetic energy.
A bicycle or skateboard in motion possesses kinetic energy.
●Running water has kinetic energy and it is used to run water mills.
●Moving air has kinetic energy and is used to derives windmills and pushes sailing boats.
●A bullet fired from a gun has kinetic energy and can penetrate into a target because of its K.E.
●when a bus speeds up going down a hill, the potential energy of bus converts into K.E. There is not much potential energy at the bottom of the hill, but there is a great amount of kinetic energy.
SI UNIT
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Its SI unit is Joule.
K.E is given by ½mv², where m is the mass of body and v is its velocity.
Suppose a body of mass 1kg is moving with a velocity of 1m/s , then its K.E will be equal to ½mv² = ½*1*1² J= ½ J.