Physics and Inertia Quiz

A soccer ball lies still on the grass until someone kicks it. What keeps the ball at rest before the kick?

• Gravity

• Balanced forces

• Inertia

• Friction

You are riding in a car when it suddenly stops. Your body jerks forward. Why?

• Gravity pulls you forward

• Inertia keeps your body moving

• The seatbelt pushes you forward

• Friction from the road slows you down

A book is sitting on a table and remains there without moving. What does this demonstrate?

• The book is glued to the table

• There are no forces acting on the book

• The book will move if its inertia changes

• The book stays at rest because no unbalanced force is acting on it

A skateboarder hits a rock and is thrown forward off the board. Which best explains this?

• Gravity pulls the skateboarder forward

• The rock speeds up the skateboard

• The skateboarder's inertia kept them moving

• The rock creates more friction

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Which object would require more force to accelerate?

• A golf ball

• A ping pong ball

• A basketball

• A bowling ball

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A student places a pencil on a desk. It stays in the same place until someone picks it up. What causes the pencil to stay still?

• The pencil has no energy.

• Gravity is pulling it down

• The pencil has mass

• There is no unbalanced force acting on it.

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If two identical carts are pushed with different forces, which will accelerate faster?

• The cart with less force

• The cart with more force

• Both accelerate the same

• The heavier cart

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Two students push boxes across the floor. Box A is heavy, and Box B is light. Both students push with the same force. What will most likely happen?

• Box A and Box B move at the same speed

• Box A moves faster than Box B

• Box B moves faster than Box A

• Neither box will move

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When a bird pushes down on the air with its wings, what happens?

• The bird moves sideways

• The bird stays still

• The air pushes back, lifting the bird

• The bird slows down

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You jump off a small boat and land on the dock. What likely happens to the boat?

• It moves forward with you

• It remains in place

• It sinks

• It moves backward

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