Does mass affect the amount of force it takes to move an object?

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Presentation transcript:

Does mass affect the amount of force it takes to move an object?

Pick up a Quiz and answer the questions. No Talking!

Predict what will happen, and explain why.

Isaac Newton recognized that the motion of planets and other objects on Earth followed consistent rules

Newton’s First Law of Motion: An object in motion tends to stay in motion unless acted on by a FORCE An object at rest tends to stay at rest unless acted on by a FORCE

Newton explained that all matter has INERTIA Bill Nye was right! INERTIA is the property of matter that makes it RESIST changes in motion

What does this mean? A force must be applied for an object to Stop Start Slow down Speed up Change direction

In your journals Use the word INERTIA to explain why the raw egg kept spinning after it was stopped.

Which has more inertia? Which resists a change in its motion the most?

Usually we have lots of small objects that fall towards Earth as meteor showers, but large objects coming to Earth are not as common. (Thank Goodness!)

In Your Journals How does Inertia help us understand why we see lots of small objects falling towards Earth, but not many large ones like asteroids?

So why do asteroids make craters?

MOMENTUM When an object has more momentum, it takes a greater force to change its motion.

When an object with mass is moving, the object gains MOMENTUM which is calculated by: Mass X Speed = MOMENTUM

Barringer Crater Scientists estimate that the asteroid that made this crater was moving at 12,800 m/s (28,800 mph) and has a mass of 45,00kg. How much momentum did it have? What happened to all of that momentum when the asteroid hit the Earth? What happened to the Earth when it was hit with an object that had that much momentum?

Do bigger asteroids make bigger craters Do bigger asteroids make bigger craters? What happens to momentum when objects collide?