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# Science- Newton's 3 laws

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## Lotte Powles

on 21 October 2012

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#### Transcript of Science- Newton's 3 laws

Isaac Newton Second Law First Law Newton's 3 laws Third Law Place your own picture
behind this frame! Double click to crop it if necessary Budapest (cc) photo by Metro Centric on Flickr (cc) photo by jimmyharris on Flickr Stockholm (cc) photo by Metro Centric on Flickr Isaac Newton (1642-1727) was an English scientist He made great contributions to
physics, optics, maths and astronomy This means that an object won't move unless made to move and an object
won't stop unless stopped. Newton's first law is that every
object in a state of uniform motion
tends to remain in that state of
motion unless an external force is
applied to it. Person 1 Person 2 Newtons second law is that the relationship between an object's mass (m), its acceleration (a), and the applied force (F) is F=ma. Acceleration and force are vectors; in this law the direction of the force vector is the same as the direction of the acceleration vector. This means that when force is applied on an object a change in speed is produced in the direction of force which is applied on it. If force increases then the change in speed will also increase. Newtons 1st law For every action there
is an equal and
opposite reaction. This is a lot easier to understand, but it means that there is an opposite for every action or force. Among elementary and middle-school students, he is best known for his Three Laws of Motions and the Universal Law of Gravitation. Second law Third law Thank You For Watching http://www.physicsclassroom.com/mmedia/newtlaws/il.gif some videos that show Newton's
first law a video that shows Newton's
second law A video that shows Newtons
third law
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