forces! by: matt abendroth, nick hauck, austin stevens, evan williams

QuickTime™ and aTIFF (Uncompressed) decompressor

are needed to see this picture.

Forces!

By: Matt Abendroth, Nick Hauck, Austin Stevens, Evan Williams



Applied Forces • A force that is applied by a

person or an object. Ex. When a student pushes a desk across a

room• The force applied is the force exerted on the object or in this

case the desk.



Noncontact/ Gravity Forces • Any force applied to an object by another body that is not in direct

contact with it.• The most common example of a

noncontact force is gravity • The units used for this force is jewels

• Gravity is the force of attraction by which terrestrial bodies tend to fall

toward the center of the earth.• Gravity keeps all the mass on the

earth.



Centripetal Forces• A force that acts on a body

moving in a circular path and is directed toward the center around

which the body is moving• The formula for centripetal force

is ac = v2/r QuickTime™ and a

TIFF (Uncompressed) decompressorare needed to see this picture.



Weight vs. Mass• Mass is the measurement of the amount of matter something

contains

• Weight is the measurement of the pull of gravity on an object • Mass is measured by using a balance comparing a known

amount of matter• Weight is measured in scale. Ex. If you way 100 pounds that’s

your weight• The mass of an object doesn’t change when an objects location

changes• Weight, on the other hand does change with location.



Balanced and Unbalanced• Balanced forces does not cause a change in motion• An example of a balance force is when you have a arm

wrestle with someone that is strong as you are and you guys are pushing as hard as you can and your arms stay in the same place.

• Unbalanced force is always cause a change in motion• Unbalanced forces can cause the opposing forces to

slow down because of the resistance or other force acting against it

• An example of an unbalanced force is when you kick a soccer ball your leg has more force than the soccer ball.



Newton’s First LawInertia

• An object at rest stays at rest and an object in motion stays in motion with the same speed and direction unless acted on by an outside, unbalanced force.

QuickTime™ and a decompressor


http://img.wallpapermenu.com/car-crash-wallpapers_5294_1280x1024.jpg



Newton’s Second LawAcceleration

• The change in velocity with which an object moves is directly proportional to the magnitude of the force applied to the object and inversely proportional to the mass of the object.

QuickTime™ and aTIFF (Uncompressed) decompressorare needed to see this picture.http://www.google.com/images?um=1&hl=en&rlz=1G1GGLQ_ENUS376&tbm=isch&sa=X&ei=k02rTefELtCtgQeT5qjrCA&ved=0CDMQBSgA&q=newton%27s+second+law&spell=1&biw=1196&bih=611



Newton’s Third LawAction/Reaction

• For every action there is an equal and opposite reaction.

QuickTime™ and a decompressor


http://upload.wikimedia.org/wikipedia/commons/6/6e/Athena_1_rocket_launching_from_Kodiak_Island.jpg

forces! by: matt abendroth, nick hauck, austin stevens, evan williams

Documents