Forces: Inertia

What is inertia?

• The tendency of objects to resist changes in velocity
• A force that pushes objects
• The speed of an object
• The direction of an object's motion

According to Newton's first law of motion, what will happen to an object at rest?

• It will start moving
• It will stay at rest unless acted upon by an outside force
• It will move faster
• It will change direction

What happens to a ball thrown in a vacuum?

• It will slow down and fall
• It will stop moving
• It will continue to travel forever
• It will bounce back

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What does an object's inertia depend on?

• Its color
• Its shape
• Its mass
• Its temperature

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Why do we need seat belts in cars?

• To keep us warm
• To prevent us from falling asleep
• To stop passengers from moving forward during sudden stops
• To make the car look nicer

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What is an example of inertia in everyday life?

• A ball rolling down a hill
• A car stopping suddenly
• A person jumping off a diving board
• A tree branch shaking in the wind

How does mass affect inertia?

• More mass means less inertia
• More mass means more inertia
• Mass has no effect on inertia
• Inertia is only about speed

What happens to your body when a car turns?

• You feel pushed to the side
• You feel lighter
• You feel heavier
• You feel nothing

What is an unbalanced force?

• A force that is equal in all directions
• A force that causes a change in motion
• A force that does not affect motion
• A force that is always present

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What is the relationship between inertia and motion?

• Inertia only applies to moving objects
• Inertia applies to both moving and resting objects
• Inertia is only about speed
• Inertia has nothing to do with motion