Energy - Pc\|Mac

Energy - Pc\|Mac

Unit 6 Types of Energy 6.1 Nature of Energy Energy is all around you! You can hear energy as sound. You can see energy as light. And you can feel it as wind.

Nature of Energy You use energy when you: hit a softball. lift your book bag. compress a spring. Nature of Energy

Living organisms need energy for growth and movement. Nature of Energy Energy is involved when:

a bird flies. a bomb explodes. rain falls from the sky. electricity flows in a wire.

Nature of Energy What is energy that it can be involved in so many different activities? Energy can be defined as the ability to do work or cause change. If an object or organism does work the object or organism uses energy. Work

What is Kinetic Energy? Energy associated with motion. Kinetic energy is affected by the mass of the object and its velocity. K.E. = 1/2(mass x

velocity2) KE = 1/2 m v 4 kg bowling ball

at 10 m/s = .5 (4kg) (10m/s)2 = 200 J

2 .25 kg baseball at 50 m/s = .5 (.25kg) (50 m/s)2 = 312 J What is Potential Energy? o Energy that is

stored and waiting to be used later PE = mgh m = mass (kg) h = height (m) g = accel due to gravity (9.8 m/s2)

What is Gravitational Potential Energy? o Potential energy due to an objects position Dont look down,

Rover! Good boy! o P.E. = mass x height x gravity What is Elastic Potential Energy?

o Potential energy due compression or expansion of an elastic object. Notice the ball compressing and expanding What is Chemical Potential Energy?

o Potential energy stored within the chemical bonds of an object

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