NEWTON'S LAWS

NEWTON'S LAWS

• Sir Isaac Newton came up with
• 3 laws of motion in 1686

NEWTON' FIRST LAW

• Newton's first law states that an object in
• Motion will stay in motion forever unless acted
• On by an unbalanced force. This is the same for
• Objects at rest.

EXAMPLE

• When you are in a car, and the car stops
• At a red light, you get jerked forward because
• You are still moving even though the car has been
• Stopped.

NEWTON'S SECOND LAW

• Newton's second law states that the
• Acceleration of an object depends on the
• Mass of the object and the amount of
• Force being applied.

EXAMPLE

• When you are walking in a supermarket
• With a shopping cart, the acceleration of
• That cart is less when you are walking with
• It than when you are running with it.

NEWTON'S THIRD LAW

• Newton's third law states that whenever one
• Objects exerts a force on a second object
• The second object exerts an equal and opposite
• Force on the first.

EXAMPLE

• When you are swimming, the force
• You exert on the water makes a reaction
• Force and that is the reason you move forward