FORCE AND MOTIONFORCE AND MOTION

OCS Applied ScienceOCS Applied Science

Mrs. BonifayMrs. Bonifay

Some Words to Know……..Some Words to Know……..

ForceForce = any push or pull on an object = any push or pull on an object MotionMotion = any movement or change in = any movement or change in position or placeposition or place FrictionFriction = a force that acts against moving = a force that acts against moving objectsobjects InertiaInertia = the tendency of an object to resist = the tendency of an object to resist change to its state of motionchange to its state of motion NewtonNewton = a measure of force (Named for Sir = a measure of force (Named for Sir Isaac Newton)Isaac Newton)

Sir Isaac NewtonSir Isaac Newton

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

LAW 1LAW 1

An object An object moving moving in a straight line will in a straight line will keep keep movingmoving in a straight line, unless an in a straight line, unless an outside force is applied to it. Also, an outside force is applied to it. Also, an object at object at rest rest (not moving) will stay at (not moving) will stay at restrest..

InertiaInertia is the word for law 1. is the word for law 1.

LAW 2LAW 2

ForceForce will cause a will cause a changechange in the motion of in the motion of an object. The change in motion depends an object. The change in motion depends on the amount of force and the on the amount of force and the mass/weight of the object.mass/weight of the object.

Greater force is required to move Greater force is required to move

objects with moreobjects with more

mass.mass.

LAW 3LAW 3

For each action, there is an For each action, there is an equalequal and and oppositeopposite reaction. reaction.

Fun with Force and MotionFun with Force and Motion

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

Roller CoastersRoller Coasters Newton's first law of motion applies to both Newton's first law of motion applies to both

objects in motion and objects at rest. Objects objects in motion and objects at rest. Objects in motion have inertia because they want to in motion have inertia because they want to remain in motion. For example a roller remain in motion. For example a roller coaster has inertia. When it starts a drop it coaster has inertia. When it starts a drop it wants to continue moving in the same wants to continue moving in the same direction at a constant speed. It doesn't direction at a constant speed. It doesn't however because the tracks act as an however because the tracks act as an outside force and change the roller coaster outside force and change the roller coaster car's directioncar's direction

http://http://www.youtube.com/watch?vwww.youtube.com/watch?v=0WpNSImh6Z8=0WpNSImh6Z8

Bumper CarsBumper Cars

Newton’s third law of motion comes into play on Newton’s third law of motion comes into play on the bumper cars. This law, the law of interaction, the bumper cars. This law, the law of interaction, says that if one body exerts a force on a second says that if one body exerts a force on a second body, the second body exerts a force equal in body, the second body exerts a force equal in magnitude and opposite in direction on the first magnitude and opposite in direction on the first body. It's the law of action-reaction, and it helps body. It's the law of action-reaction, and it helps to explain why you feel a jolt when you collide to explain why you feel a jolt when you collide with another bumper car. with another bumper car.

http://www.youtube.com/watch?v=oNRNl8jtVk0&http://www.youtube.com/watch?v=oNRNl8jtVk0&feature=related&safety_mode=true&persist_safefeature=related&safety_mode=true&persist_safety_mode=1&safe=activety_mode=1&safe=active