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 :)
