NEWTON'S LAW OF MOTION- OF INTERACTION.pptx

ElsieColico1 31 views 20 slides Aug 28, 2024
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About This Presentation

This powerpoint is about the law of interaction presented by Isaac newton


Slide Content

Law of Interaction ACTION-REACTION

explain Newton’s Law of Interaction; demonstrate the application of Newton's Third Law by conducting a hands-on experiment; and develop an appreciation for the significance of Newton's Third Law in everyday life. By the end of the lesson, you'll be able to:

What happens when you push against a wall?

What happens when you push against a wall? Does the wall push you back?

PUSH To move something away from you PULL To move something toward you Let's Review!

It is a push or a pull. It can affect the motion of an object. What is Force?

It can make a stationary object move. It can also stop a moving object. Effects of Push and Pull

It can make an object move slower or faster. It can change the direction of a moving object. Effects of Push and Pull

LAW OF INTERACTION ( The third law of motion) For every action, there is an equal and opposite reaction.

There are two forces resulting from this interaction - a force on the chair and a force on your body. These two forces are called action and reaction forces. LAW OF INTERACTION

LAW OF INTERACTION Consider the propulsion of a fish through the water. A fish uses its fins to push water backwards. In turn, the water reacts by pushing the fish forwards, propelling the fish through the water. The size of the force on the water equals the size of the force on the fish; the direction of the force on the water (backwards) is opposite the direction of the force on the fish (forwards).

LAW OF INTERACTION Flying gracefully through the air, birds depend on Newton’s third law of motion. As the birds push down on the air with their wings, the air pushes their wings up and gives them lift.

LAW OF INTERACTION Consider the flying motion of birds. A bird flies by use of its wings. The wings of a bird push air downwards. In turn, the air reacts by pushing the bird upwards. The size of the force on the air equals the size of the force on the bird; the direction of the force on the air (downwards) is opposite the direction of the force on the bird (upwards). Action-reaction force pairs make it possible for birds to fly.

OTHER EXAMPLES OFLAW OF INTERACTION The baseball forces the bat to the left (an action); the bat forces the ball to the right (the reaction).

OTHER EXAMPLES OFLAW OF INTERACTION Consider the motion of a car on the way to school. A car is equipped with wheels which spin backwards. As the wheels spin backwards, they grip the road and push the road backwards.

OTHER EXAMPLES OFLAW OF INTERACTION The reaction of a rocket is an application of the third law of motion. Various fuels are burned in the engine, producing hot gases. The hot gases push against the inside tube of the rocket and escape out the bottom of the tube. As the gases move downward, the rocket moves in the opposite direction.

Think and observe your environment at home or in your community and write a short paragraph about at least two examples of the law of interaction you observe, and explain the forces involved. Share your answer with the class next session. ASSIGNMENT

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