1. What is Newton’s First Law?
My first law states that an object at rest will stay at rest, and an object in motion will stay in motion until acted on by an unbalanced force. .

2. Also known as the Law of Inertia
Also known as the Law of Inertia. Inertia is the resistance of an object to change its state of motion.

3. The skateboarder is moving at a constant speed and direction
The skateboarder is moving at a constant speed and direction. She will eventually stop because of the force of friction acting on the wheels.
FRICTION

4. When the Cowboy’s pass is intercepted by the Texans, the path of the ball is stopped. An unbalanced force has acted upon the ball and changed its direction.

5. When the baseball is hit by the batter, it flies in the air
When the baseball is hit by the batter, it flies in the air. INERTIA says that it will stay moving in the same path at the same speed. GRAVITY forces the ball to change its path.

6. What is Newton’s Second Law?
My second law states that the acceleration of an object depends on the mass of the object and the amount of force applied to the object.

7. Velocity is a measure of speed and direction.
Acceleration is a CHANGE in velocity.
NEGATIVE ACCELRATION is a decrease in speed.
POSITIVE ACCELRATION is an increase in speed.

8. Acceleration also changes when a direction changes.

9. Mass is the amount of matter in an object!
Weight is the amount of matter in an object along with the pull of gravity

10. Force is….
PUSH or
PULL

11. The more mass equals less acceleration
How does mass affect acceleration?
When you smack a tennis ball as hard as you can with a tennis racket, the ball flies far and fast.
The more mass equals less acceleration
Try using that same racket with the same force but with a baseball instead. What’s going to happen?
The ball doesn’t go as far or as fast and you’re lucky if your racket doesn’t end up looking like this guy’s. Why?
Ready For more about the second law?
As the mass of the ball goes up, your force better go up, too, or the ball is not going to accelerate as fast.

12. The more force equals more acceleration
How does force affect acceleration?
Let’s say crazy old Mike Tyson gives you a pat on the head because he’s proud of you for getting an A on your science test.
The more force equals more acceleration
Now let’s say crazy old Mike Tyson pounds on your face as hard as he can because…well, because he’s crazy like that.
I’m so proud of you.
That’s the effect of different masses. How about the effect of different forces?
Want to take a wild guess which one is going to send you flying into the next county? And we haven’t even stopped to count your ears yet.

13. So let’s sum up that second law.
Newton’s Second Law
The larger the mass, the slower the motion.
The smaller the mass, the faster the motion.
The larger the force, the faster the motion.
The smaller the force, the slower the motion.
So let’s sum up that second law.
The smaller the force, the slower the motion and vice versa.
Smaller equals quicker.

14. Force = Mass X Acceleration
F=ma
The acceleration of an object depends on the mass of the object and the amount of force applied to the object.

15. What is Newton’s Third Law?
Basically, forces come in pairs. Wherever there is one force there is always another.
Need proof? When you push off the wall while swimming, your feet push on the wall, and the wall pushes on your feet.
My 3rd law states that for every action, there is an equal and opposite reaction.

16. The two forces are equal and in opposite directions.
When rowers move the paddle it exerts a force on the water. The water also exerts a force on the paddle.
The two forces are equal and in opposite directions.

17. The opposite force is the ground pushing on the space shuttle.
The space shuttle’s engine is the initial force pushing on the ground.
The opposite force is the ground pushing on the space shuttle.

18. So how do the row boat, swimmer, and the space shuttle move??
Remember my second law?? It all comes down to mass. The object with larger mass exerts a stronger force on the smaller object, causing it to move!