Newton's 1st and 3rd Law

Newton’s 1st and

3rd Law

Newton’s 1st Law of Motion

★ Inertia

○ An object at rest, or an object in motion, will not

change its motion until an outside force acts upon it.

★ It takes more force to start an object moving (or to stop

an object) than it takes to keep it moving.

★ Friction is the force that opposes motion

Is Friction bad?

● What would life be like with no friction?

○ No wasted energy
○ Engines would not overheat
○ Walking / driving on ice

Open Ended

Yo, answer two questions! (mini paragraph answers)

1. Give a detailed example of no friction being good. Details count!

2. Give a detailed example of no friction being bad. Details count!

Newton’s 3rd Law of Motion

❖ For every action there is an equal and opposite

reaction.
➢ To move forward, you need to push backwards.
➢ Don’t believe me, prove me wrong!

Draw

This man's right leg is currently in front of his body. Draw an arrow to show where it will be after he takes a step.

Open Ended

Yo, besides walking, give an everyday example of Newton's Third Law. Details count! (mini paragraph answer)