Presentation on theme: "1 st law-An object at rest will stay at rest, and an object in motion will stay in motion at constant velocity, unless acted upon by an unbalanced force."— Presentation transcript:
1 st law-An object at rest will stay at rest, and an object in motion will stay in motion at constant velocity, unless acted upon by an unbalanced force. 2 nd Law-Force is equal to the mass times the acceleration. (F=ma) 3 rd Law-For every action, there is an equal and opposite reaction.
This law states that an object, at rest or moving, will continue that action until stopped or moved by any force greater than its own. This carton of ice cream will stay on that counter FOREVER until acted upon by any force. Maybe its someone picking it up to eat or a tornado of cats knocks it off the shelf.
If something is airborne, it will stay moving until acted upon by a force. (On Earth this force will most likely be gravity. ) This baseball will stay in the air until a force acts on it. It would most likely be gravity, but who knows, maybe God wanted to push it back down for that centerfielder to make the winning out.
Inertia is defined as the tendency of a body to resist acceleration, remain at rest if at rest, the tendency of a body in straight line motion to stay in motion in a straight line unless acted on by an outside force. This is stated in the first law.
When riding in a car, you body experiences inertia. If you are traveling at 50 MPH and a deer runs out in the road, you must hit the brakes to avoid hitting it. Although the car is decelerating your body wants to continue moving at 50 MPH thats why you feel the jerk forward.
Newtons second law proves that different mass accelerate to the Earth at the same rate but with different forces. 6 kg 4 kg F=(4kg)(9.81m/s/s) F=39 N F=(6kg)(9.81m/s/s) F=59 N (9.81m/s/s)
The faster we move the more we produce. Much like school or careers, the more we learn and the quicker we do it, more force and power comes out of it. Getting good grades will give you more force and power to do what you want in life.
For every action, there is an equal and opposite reaction. = What comes around goes around.
The amount of force that the monkey is exerting down on the ground is exactly equal to the force that the ground exerts back up on the monkey. This keeps the monkey in place from going up or down. The gravity is exactly equal to the normal force of the ground.
Birds depend on Newton's Third Law. When the birds wings push down through the air, the air pushed back up into the wings with the same amount of force giving the bird the boost it needs to fly
When you walk from room to room in school, you are pushing down on the floor with a certain amount of force. In response to this, the floor pushes back up onto you with the same amount of force youre exerting onto the floor. Without this equilibrium of force, we would either float around or sink through the ground.
Have you ever heard the saying Treat others the way you want to be treated. Or What comes around goes around. This is a very easy way to look at this law. Whatever you do, physical or not, there will ALWAYS be a reaction to your action. Think about moving furniture. When you push a desk, it will push back on your hand with the exact same amount of force that you are pushing on it.