Types of Forces Review

Which is the following is NOT a non-contact force?

• Applied force

• Gravitational force

• Electrical force

• Magnetic force

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William used a hammer to pound a nail into a wooden board. When the nail was about halfway through the board, he stopped and turned the board upside down. The nail stayed in place in the board. Which of the following acts on the nail to keep it in place in the board?

• Friction

• Gravity

• Magnetism

• Weight

A 10 kg, 15 kg, and 20 kg rock are rolling down a hill. Which rock will require the most force to stop?

• 10 kg rock

• 15 kg rock

• 20 kg rock

• All 3 rocks will require the same force

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Brittany has a bar magnet. What will happen when she brings the north end of her magnet to the south end of her magnet?

• They will attract

• Nothing will happen

• They will repel

• Sparks will fly

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When we pour sand on an icy road, what force are we increasing to help cars stay on the road?

• gravity

• magnetism

• friction

• buoyancy

If these boys are pulling with the same amount of force. What will happen?

• The boy in blue will win.

• The boy in red will win

• They will not move at all

• Both will fall down.

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Rubbing your hands together is what kind of force?

• gravity

• friction

• magnetic

• electrostatic force

Will these attract or repel?

• attract

• repel

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Will these attract or repel?

• attract

• repel

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This is an example of what force?

• pull

• push

• magntism

• non-contact force

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