PRESENTATION OUTLINE
NEWTON'S LAWS OF MOTION PROJECT
1st Law
The first law states that an object at rest remains at rest and, an object in motion remains in motion at constant speed and in a straight line unless acted on by an unbalanced force.
This picture describes Newton's First Law because the foot, the unbalanced force, kicks the object at rest, the ball. The unbalanced force hit the ball and made the object at rest move. The ball would stay at rest until an unbalanced force acted on it.This is caused by inertia. It is the tendency of objects to resist a change in motion.The ball will not move unless acted on
1st Law
This picture shows an object in motion. Objects will continue going in a straight line and constant speed unless an unbalanced force is acting on it. The brakes are the unbalanced force because they cause the car to stop moving. Here, the unbalanced force is friction. Friction changes the motion of objects.
2nd Law
Newton's Second Law says, that acceleration of an object depends on the mass of the object and the amount of force applied.
As the mass of an object goes up, the acceleration decreases. As the amount of force is increased, the acceleration is increased. This picture shows a person pushing a bus, which has a large mass. Because it's mass is so much, acceleration is lower. When more force is added, the acceleration will increase and the bus will move faster.
2nd Law
This picture shows Newton's Second Law because the train is harder to start moving than the car. This is because the train has more mass than the car. As mass increases, acceleration decreases. This means that if you want the train to accelerate as much as the car, you will need to add more force to make up for the increase in mass. The acceleration of an object increases as force is increased.
3rd Law
Newton's Third Law states: Whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first.
This picture shows a row boat moving across the water. The oar pushing on the water is the action. The reaction is the water pushing on the oar, making the boat move forward. A force is always exerted on an object by another object. However, action and reaction pairs do not act on the same object. Here, the oar is the action force and the water is the reaction.
3rd Law
This picture shows an airplane in the air. The action is the airplane pushing on the air. The wings push the air downward. The reaction is the air pushing up on the plane. The size of the force on the air equals the size of the force on the plane. The forces are exerting in opposite directions. For every action, there is a equal and opposite reaction. Here, the wing is the action force and the air is the reaction force.
