Newton’s Second Law of Motion. Newton’s Second Law Newton’s Second Law of Motion- Acceleration depends on the objects mass and the net force acting on.

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Presentation transcript:

Newton’s Second Law of Motion

Newton’s Second Law Newton’s Second Law of Motion- Acceleration depends on the objects mass and the net force acting on the object. –Connects the net force on an object, its mass and its acceleration Acceleration=net force/mass (not the same as motion, change in velocity)

Gravity Force exists between any two objects that have mass –Gravity always is attractive and pulls objects towards each other Weight- Size of the gravitational force exerted on an object. A free falling object towards Earth Accelerates 9.8m/s every second it falls. Force of Gravity increases when mass increases and when objects get closer.

Resistance Air resistance is a form of friction that slows down any object moving in the air. –Falling objects with greater surface area experience more air resistance! –Terminal velocity- the greatest velocity an object reaches.

Circular Motion When object moves in a circle, it is constantly having change in velocity, so it has a constant Acceleration. Centripetal Force- the force that causes the object to move in a circle. Direction is toward the center of objects circular path Ex: Satellites around Earth- moving so fast they never fall to Earth