Newton's Laws by definition
Newton's First Law says that...
An object at rest will stay at rest and an object in motion will stay in motion unless acted upon by an unbalanced force.
A ferris wheel is an example
Wheel and Axle
What is a force?
A push or a pull
A ball rolls down a hill and will continue to roll unless friction or another force stops it
Newton's First Law
Newton's Third Law says that...
Every action has an equal and opposite reaction.
A bottle cap is an example
Screw
What's the difference between unbalanced and balanced forces?
Balanced forces don't cause a change in motion and is equal and opposite in direction. Unbalanced forces are not equal.
A cart full of groceries has more mass than an empty cart.
Newton's Second Law
Newton's Second Law says that...
The acceleration of an object is dependent on the force acting on the object and the mass of the object itself.
Firefighters use this simple machine in successful rescue operations.
Pulley, lever, wedge
Name the vocab word: The speed of something in a given direction
Velocity
A bat hits a ball. What is the reaction force?
The ball hits the bat
Newton's Third law is also known as the law of...
Action and reaction (what does this mean?)
A zipper is an example
Wedge
What is acceleration?
Increasing the rate of speed of something.
The wings of a bird push air downward and the air pushes the bird upwards
Newton's Third Law
The equation for Newton's Second law
F=MA
A slide is an example
Inclined Plane
The resistance of an object or surface encounters while moving over another is called ___; aka the force that works against motion.
Friction
T or F: When objects collide, the smaller mass object has a higher acceleration.
True