The Law of Inertia

What is the unit of measurement for force?

• kilograms
• newtons
• grams
• newt

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NGSS.MS-PS2-2

Which type of force(s) will cause a change in an object's motion?

• gravity
• zero net force
• balanced forces
• unbalanced forces

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What is Newton's First Law of Motion?

• F=m x a
• Every action has an equal and opposite reaction
• An object at rest stays at rest, an object in motion stays in motion unless acted on by another force. 
• Friction 

What is inertia?

• the force that opposes motion

• the force of attraction between 2 objects

• an object's tendency to stay in its state of motion

• a change in an object's speed and/or direction

According to Newton’s first law of motion, a moving object that is not acted on by an unbalanced force will

• remain in motion.
• eventually come to a stop.
• change its momentum.
• accelerate.

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

• Friction
• Mass
• Inertia
• Gravity

The law of inertia (Newton’s First Law) applies

• to both moving and nonmoving objects
• only to moving objects
• only to objects that are not moving

Why does an 18-wheeler truck have more inertia than a bicycle?

• it has more mass

• it has more volume

• it is not as aerodynamic

• It has more space

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NGSS.MS-PS2-2

Without a force to stop or slow a coasting object, the object will coast forever in a ______ line. 

• blue
• red
• straight
• vertical 

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NGSS.HS-PS2-1

NGSS.HS-PS2-2

If I slowly roll a ball down the hallway, why does it eventually stop?

• Because of Newton's First Law
• Friction and Air Resistance
• Inertia
• It wouldn't stop, it would keep going until it hits a wwall.

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