Kinetic Energy
First
Definition for Kinetic Energy
When something is in motion it is
said to have kinetic energy.
Formula for
Kinetic Energy
For an object that is moving the kinetic
energy equals one half times the mass of the object
times the square of the speed of the object. In symbols:
EK = (1/2)mv2
Example
Calculation for Kinetic Energy
How much kinetic energy does an
object have if its mass is 5.0 kg and it is moving at a speed of 4.0 m/s?
EK = (1/2)mv2
|
Formula for kinetic energy.
|
EK = (1/2)(5.0 kg)(4.0
m/s)2
|
Plug in values for mass and speed.
|
EK = 40 J
|
Kinetic Energy equals 40 J.
|
Example Kinetic Energy in Daily
Life
© Orbital
motion: moons about the planets, or the planets around the sun. The motion of
the stars in a galaxy, orbiting satellites and space vehicles.
© Random
linear motion: On a molecular level, vibrations of molecules, gas molecules
bouncing around a room.
© Rotational
or torquing motion: spinning flywheels, rolling balls or wheels
© Projectile
(parabolic) motion: a fired bullet, a thrown ball, a boy jumping
© Linear
motion: running, bowling, aircraft in flight, a moving car or train, a boy
skateboarding
The Picture above is one of example Kinetic Energy. The roller Coster has the higest value of kinetic energy in the higest position.
The picture above is also one example of kinetic energy. The Ball started have kinetic energy when it fall down from mountain
Thank You. Hope it useful :)
6 komentar:
is there any kinectic energy in vacum room??????
nice and i like,,
but,, why The roller Coster has the higest value of kinetic energy in the higest position??
can you explain to me??
thank's for iformation,,
I want to ask, if possible potential energy and kinetic energy have the same value at a time?
intresting article.
u said there are many example of kinetic energy in our daily life, like Orbital motion, Random linear motion, Projectile (parabolic) motion:
but I don't understand about Projectile (parabolic) motion. why parabolic motion have relationship in kinetic energy? can you tell me?
I like your article.
I want to ask you, but this not about your article maybe,
sorry, I want to ask the electricity is energy or not?
thanks
Assalamu'alaikum wr wb.
Tahnk You for all comment and question :)
i will try to answer it,
For Mulinda, In Vacuum Room i think There i no kinetic energy, why?, that is because in vacuum room, there is no air, so there can't any energy there.
For Afni Yunita, i'm sorry, i make mistaken in that senetence, the roller coster do not have higest value of kinetic energy in the higest position, but have higest value of potential energy, but, we don't discuss potential energy here.
For Benny Sumarno, I think it can be happend if the result of each energy is same, because kinetic depend on velocity, and potential depend on high position
For diskha Ayu, Projectile or parabolic motion absolutely have kinetic energy becaause it have motion and velocity, as we know, kinetic energy happend in movement object
For Aulia Vasanty, oh oke aul, i think eletricity is also energy, the energy in electricity we call it voltage i think
Thank You, sorry if there is mistaken :)
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