Newton's Laws of Motion

Which statement best explains Newton's Third Law of Motion?

• An object at rest tends to stay at rest.
• For every action there is an equal and opposite reaction.
• The acceleration of an object is based on the force applied.
• An object continues its motion until an unbalanced force is applied.

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NGSS.MS-PS2-1

Which is the best example of Newton's First Law of Motion?

• a basketball thrown in the air falls to the ground
• a soccer ball remains motionless until it is kicked by a player
• a baseball player swings at an approaching ball
• an ice skater pushes back from a wall and moves backwards

An object is resting motionless on a surface. According to Newton's 1st Law, the object will only start to move if

• the net forces on the object equal zero
• an unbalanced force is applied to the object
• the upward force of the object is equal to its acceleration
• two forces that are equal and opposite are applied to the object

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NGSS.MS-PS2-2

A truck that is travelling at a constant speed is carrying some boxes.  If the truck comes to a sudden stop, what will most likely happen to the boxes?

• They will stay in the middle of the truck.
• They will slide toward the front of the truck.
• They will slide toward the back of the truck.
• They will fall off the side of the truck.

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NGSS.MS-PS2-2

The force that draws all objects towards Earth.

• friction
• gravity
• mass
• acceleration

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NGSS.MS-PS2-4

A rubbing together force that slows things down and stops them.  It works against motion.

• acceleration
• mass
• gravity
• friction

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NGSS.MS-PS2-2

The soccer ball is sitting on the half line and Zach runs up to kick it.  What law will occur when he kicks it?

• An object at rest will remain at rest unless acted on by an unbalanced force.
• An object will remain motionless until it decides to move.
• The harder Zack kicks the ball, the less distance it will travel.
• Time travel has always been possible.  You just have to believe.

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

If Brandon wants the  baseball to go far, he must use _________ force when he swings the bat.

• no
• equal
• less
• more

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NGSS.MS-PS2-2

Newton's first law that says an object at rest will remain at rest unless acted upon by an unbalanced force is also called the law of 

• acceleration
• inertia
• action and reaction
• may the force be with you

What kind(s) of objects have inertia?

• all objects with mass
• only objects at rest
• only objects in motion
• only objects whose motion is being changed