Newton's 1st & 2nd Laws of Motion Review

What is Newton's 1st Law of Motion?

• There is an opposite reaction to an action

• An object in motion will stay in motion & an object at rest will stay at rest, unless acted upon by an unbalanced force

• Unbalanced force

• Gravity

What is Inertia?

• A car

• What causes an object to change direction

• Force

• The resistance of an object to change its speed or direction.

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A force that does not cause a change in speed or direction is called a

• Balanced force

• Unbalanced force

• Inertia

• Acceleration

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A force that cause a change in direction or speed of an object is called an

• Balanced Force

• Unbalanced Force

• Inertia

• Acceleration

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What kind of force does the picture show?

• Balanced Force

• Unbalanced Force

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What kind of force does the picture show?

• Balanced force

• Unbalanced force

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How can the example of riding a skateboard be used as an example for Newton's 1st Law of Motion?

• The skateboard has wheels

• The concrete it rides on

• An unbalanced force (your foot pushing off the ground) makes the skateboard move forward.

• It cannot be used as an example

What is Newton's 2nd Law of Motion?

• Mass is heavy

• Gravity uses a downward force

• The Law of Inertia

• Acceleration = Force / Mass

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What is the relationship between force and acceleration?

• The greater the force applied to an object, the greater the acceleration

• Its an inverse relationship

• They are not related

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What is the relationship between mass and acceleration?

• The greater the mass, the MORE it will accelerate

• The greater the mass, the LESS it will accelerate

• Its a direct relationship

• They are not related

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