Post on 09-Apr-2018
8/8/2019 Force & Motion Overview
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An Overview
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A large part of physics is force. Forces are
found everywhere.
Sometimes the force is big, like the sun’s gravita-
tional pull on the planets.
Other times the force
is small, like pushing
a shopping cart
through the store.
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8/8/2019 Force & Motion Overview
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First Law:
An object at rest tends to stay at rest, and an ob-
ject in motion tends to stay in motion, with the
same direction and speed until a force acts upon
This ball will stay at rest un-til a force makes it move.
This ball wouldhave continued if it
was for the man or
net stopping it.
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Second Law:
Acceleration (the rate the object changes its ve-
locity) happens when a force is applied to mass(all objects have mass). The greater the mass
an object has the more force needed to make it
accelerate (move). The less mass an object has
the less force needed to make it
move (accelerate).
Third Law:
For every action (or force) there is an equal and
opposite reaction (or force).
A tennis ball has less mass than a bowling bowl, therefore it
takes less force to accelerate the tennis ball and more force to
accelerate the bowling ball.
When a cannon is fired the ballshoots out and one direction, but
the cannon itself is pushed back
in the opposite direction.
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There is friction between the tires of a car
and the road. If the road is wet there is less
friction making harder for the car to stop.
Friction is a force that holds back or slows down the move-
ment of an object.
There is friction between the golf ball and the
grass. This is what caused a golf ball to stop roll-
ing after it has been hit with the club.
If a force is applied to an object it may change its energy.
That energy must be used to do work, or accelerate, an ob-
ject. There are many types of energy. Kinetic and Potential
energy are found in all things.
Potential Energy
is stored energy – that is it has the
potential
(possibility) to use
its energy to move
(or accelerate)
Kinetic Energy is
energy in motion – that is the energy
that was stored is
now being used to
move (or accelerate)
the object.
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Information compiled and organized by
Angelic Boyers
LME 537
ReferencesExamining Gravity and it’s pull. (2005). Laws of motion. Retrieved January 12, 2011, from http://player.discoveryeducation.com/index.cfm?guidAssetId=CDA9C235-0EC4-4CA5-A713-B920EBD189D2&blnFromSearch=1&productcode=US Friction on the ground and in the air. (2005). Laws of motion. Retrieved January 12, 2011, from http://
player.discoveryeducation.com/index.cfm?guidAssetId=CDA9C235-0EC4-4CA5-A713-
B920EBD189D2&blnFromSearch=1&productcode=US
Let's move it: Newton's laws of motion. (2007). Discovery education. Retrieved January 10, 2011, from http://
player.discoveryeducation.com/index.cfm?guidAssetId=CD57F186-3466-48A8-892F-
E4CA072F48F7&blnFromSearch=1&productcode=US
Motion basics. (1997-2010). Physics4kids. Retrieved January 9, 2011, from http://www.physics4kids.com/files/
motion_intro.html
Picture of Sir Isaac Newton. (2009). Climate progress. Retrieved January 9, 2011, from http://
climateprogress.org/2008/05/30/krauthammers-strange-denier-talk-points-part-1-newtons-laws-were-overthrown/