An object that IS MOVING will keep moving with constant , and in a line FOREVER UNLESS acted upon by an force that changes the acceleration.

Define inertia? (Use your notes.)

What is the difference between speed and velocity?

Which of the following has more inertia? Circle or highlight your answer.
Bowling ball or Tennis ball B. Hammer or Feather
II. NEWTON’S SECOND LAW OF MOTION
Newton’s second law of motion is also known as THE .
Newton’s second law says that heavier objects require a force to accelerate them...Move them or stop them!
The greater the force that is applied, the the acceleration.
The lesser the force that is applied, the the acceleration.
If you apply a force onto an object...The object will exert a force back that is and .
If you want to move an object with a greater acceleration, you must either use more or take off some of the object’s . Newton’s Second Law
The equation that is used to solve second law problems is F = M x A.
What do each of the variables mean?
F = M = A =

III. NEWTON’S THIRD LAW OF MOTION
Newton’s third law of motion is also known as the LAW OF .
Newton’s third law says that for every action there is an but, reaction. I you...you will me in an direction.
Newton’s third law states that forces must ALWAYS occur in .
The ways unbalanced forces change acceleration: , , and .

IV: KEY CONCEPTS: On the line before each description write, First, Second, or Third to identify which of Newton’s Laws is being described.
Newton’s 1st Law of Motion
Newton’s 2nd Law of Motion
Newton’s 3rd Law of Motion
An object at rest will remain at rest, and an object in motion will remain in motion, at a constant velocity until acted on by an outside force.
The acceleration of an object is inversely proportional to the mass of the object, and directly proportional to the force applied to the object.
When one force exerts a force on a second object, the second object exerts a force of the same size, but in the opposite direction, on the first object.

1. For every action force, there is an equal but opposite reaction force.
2. When a car stops quickly by applying the brakes, the passengers fly forward until stopped by their seatbelt.
3. Two cars collide at an intersection. The car with more mass moves a small distance, but the car with less mass skids a great distance across the road.
4. A magician pulls a tablecloth out from under dishes and glasses set on top of the table.
5. The engines fire, and the rocket lifts off the launch pad.
6. When Mary adds more items to her grocery cart, she notices it becomes harder to push the cart.
EXPLAIN what will happen if they push each other: (Boy is heavier than Girl)