Newton's Laws of Motion #2

The SI units for force are...

• Kilograms
• Newtons
• Meters per second
• Pounds

What is Newton's Third Law?

• Object in motion stays in motion and an object at rest stays at rest unless acted on by a outside force
• Force = mass x acceleration
• For every action there is an equal and opposite reaction

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According to Newton's second law, if you increase the force applied to an object :

• it accelerates more
• it doesn't move
• you get more inertia
• it decelerates

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What is Newton's First Law known as? The Law of

• Friction
• Mass
• Inertia
• Gravity

Which has more Inertia? (so need more force to move) 

• Truck
• Ant
• A cat
• A skateboard

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Acceleration of an object happens when things ________

• slow down
• go faster
• change direction (turn)
• All of the above

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Speed =

• distance / time
• time / distance
• distance * time

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LT5: The rate at which velocity CHANGES is: 

• acceleration
• speed
• direction
• physics

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LT5: What is velocity?

• Time + Distance
• Speed in a given direction
• A fast dinosaur
• The direction a storm is moving

Forces always act in equal and opposite pairs.

• Newton's 1st Law
• Newton's 3rd Law
• Newton's second law

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