Force and Acceleration Review

Which of these is an example of a force?

• A high five

• Kicking a ball

• Walking

• Skateboarding

• All of these

What are forces measured in?

• Newtons (N)

• Kilograms (kg)

• Meters per second ² (m/s²)

• Newtons (n)

When does acceleration happen?

• When an object speeds up

• When an object slows down

• When an object keeps doing what it is already doing

• When an object changes direction

Which of these explains why we wear seatbelts?

• The seatbelt is the balanced force that stops you

• The seatbelt is the unbalanced force that slows you down

• The seatbelt is the unbalanced force that keeps you in motion

• The seatbelt is the balanced force that keeps you in motion

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What is the net force?

• 1 N left

• 11 N right

• 5 N right

• 4N right

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When the forces on an object become unbalanced, what is happening?

• Object speeds up

• Object slows down

• Object changes direction

• Object stays the same

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What ways can you increase the acceleration on an object?

• Reduce the force

• Reduce the mass

• Add more mass

• Add more force

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When you are moving a bookshelf on carpet, how can you get it to accelerate more?

• Empty the book shelf

• Find someone to help you push it

• Stack more books on it

• Put it on wheels

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Why would does driving a large truck use more gasoline than driving a small Honda?

• Honda has less mass so you have to less more force to make it accelerate

• Truck has more mass so you have to use more force to make it accelerate

• Truck has less mass so you have to use more force to make it accelerate

• Honda has less mass so you have to use more force to make it accelerate

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Using what you know about force and mass, would you rather go head to head with someone who is larger or smaller? Why?

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