Newton's Laws of Motion

A 10 kg object experiences a net force of 20 Newtons. Calculate the object's acceleration.

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NGSS.MS-PS2-2

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

• Friction
• Mass
• Inertia
• Gravity

What is Newton's First Law

• F=ma
• Every action has an equal and opposite reaction
• An object at rest stays at rest, an object in motion stays in motion. 
• Friction 

As more unbalanced force is applied to an object, its acceleration:

• stays the same

• decreases

• increases

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NGSS.MS-PS2-2

Which one of Newton’s Laws of Motion best explains why the dishes do not move when the table cloth is removed?

• Law of Inertia

• Law of Acceleration

• Law of Action-Reaction

• Law of Gravitation

What is Newtons 2nd law of motion?

• An object at rest stays at rest unless acted on an unbalanced force.
• For every action there is a equal and opposite reaction

What is Newtons 1st law of motion?

• An object at rest stays at rest unless acted on an unbalanced force.

• For every action there is an equal and opposite reaction

What is Newtons 3rd law of motion?

• An object at rest stays at rest unless acted on an unbalanced force.
• For every action there is a equal and opposite  reaction.
• Law of gravity 

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NGSS.MS-PS2-1

A box is accelerated to the right across rough ground by a horizontal force F_a. The force of friction is F_f. The weight of the box is F_g and the normal reaction is F_n. Which is the free-body diagram for this situation?

• 
• 
• 
• 

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NGSS.HS-PS2-1

Two blocks of weight 5 N and 2 N are attached to two ropes, X and Y.

The blocks hang vertically. The mass of the ropes is negligible. What is the tension in X and the tension in Y?

• 7N, 7N

• 7N, 2N

• 5N, 2N

• 5N, 3N

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NGSS.HS-PS2-1