Newton's Laws

Which of the following is an example of balancing forces?

• A Book resting on the table.

• A pencil is knocked off the desk.

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NGSS.3-PS2-1

Which of the following is an example of an unbalanced force?

• A book resting on the table.

• A pencil that is knocked to the ground.

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NGSS.3-PS2-1

A push or a pull is called a

• Gravity

• Force

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NGSS.3-PS2-1

What is Newton's 1st Law?

• For every action there is an equal and opposite reaction.

• An object at rest will stay at rest, an object in motion will stay in motion, unless an unbalanced force acts upon it.

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NGSS.3-PS2-1

What is Newton's 2nd Law?

• For every action there is an equal and opposite reaction.

• Acceleration depends on two variables, the mass of the object and the amount of force.

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NGSS.MS-PS2-2

What is Newton's 3rd Law?

• For every action there is an equal and opposite reaction.

• Acceleration depends on two variables, the mass of the object and the amount of force.

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NGSS.MS-PS2-1

What explains why objects resist changes in their state of motion?

• gravity

• inertia

• force

• friction

What explains a quantity that has BOTH speed and direction?

• Inertia

• Force

• Speed

• Velocity

Newton's Second Law is based on two variables, they are .....

• mass and the amount of force

• gravity and friction

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NGSS.MS-PS2-2

Newton's first law states that an object must travel at a constant speed and in ___________, unless an unbalanced force acts on it.

• in a circle

• a wave like manner

• the same direction

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NGSS.3-PS2-1

NGSS.3-PS2-2