OCS Applied Science Mrs. Bonifay

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Newton’s Laws of Motion

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Presentation transcript:

OCS Applied Science Mrs. Bonifay FORCE AND MOTION OCS Applied Science Mrs. Bonifay

Some Words to Know…….. Force = any push or pull on an object Motion = any movement or change in position or place Friction = a force that acts against moving objects Inertia = the tendency of an object to resist change to its state of motion Newton = a measure of force (Named for Sir Isaac Newton)

Sir Isaac Newton Sir Isaac Newton is well-known for his three laws of motion. Some of you may remember Newton as the man who discovered gravity when an apple dropped on his head (or so the story goes!).

LAW 1 An object moving in a straight line will keep moving in a straight line, unless an outside force is applied to it. Also, an object at rest (not moving) will stay at rest. Inertia is the word for law 1.

Greater force is required to move LAW 2 Force will cause a change in the motion of an object. The change in motion depends on the amount of force and the mass/weight of the object. Greater force is required to move objects with more mass.

LAW 3 For each action, there is an equal and opposite reaction.

Fun with Force and Motion One of the best places to observe Newton’s Laws of Motion is an amusement park. Can you name some things that might be examples?

Roller Coasters http://www.youtube.com/watch?v=0WpNSImh6Z8 Newton's first law of motion applies to both objects in motion and objects at rest. Objects in motion have inertia because they want to remain in motion. For example a roller coaster has inertia. When it starts a drop it wants to continue moving in the same direction at a constant speed. It doesn't however because the tracks act as an outside force and change the roller coaster car's direction http://www.youtube.com/watch?v=0WpNSImh6Z8

Bumper Cars Newton’s third law of motion comes into play on the bumper cars. This law, the law of interaction, says that if one body exerts a force on a second body, the second body exerts a force equal in magnitude and opposite in direction on the first body. It's the law of action-reaction, and it helps to explain why you feel a jolt when you collide with another bumper car. http://www.youtube.com/watch?v=oNRNl8jtVk0&feature=related&safety_mode=true&persist_safety_mode=1&safe=active