Amplify Balanced Forces

What will increasing or decreasing the amount of paper do?

• Adding more paper will change nothing.

• It will weaken the magnet itself.

• More paper will weaken the amount of force exerted on the paper clip.

• Decreasing paper will make the force of the magnet stronger.

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These two men are trying to move this box across the room. Will their strategy work? Why or why not?

• It will work because they are both pushing.

• It will work because two men pushing will make the box light.

• It will not work because they are pushing against each other.

• It will not work because one is pushing and one is pulling.

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NGSS.MS-PS2-2

Will this man be able to push this car very far alone, or will he need help?

• He will be able to push it very far. It is a small car.

• He is pushing the car.

• He will not be able to push the car very far alone. The car is too heavy. The forces are unbalanced.

• He will not be able to push it very far, because the car is pushing back.

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What will happen to the girl in the pink shirt if the boy in the green shirt pulls harder than her?

• The boy will fall because he pulls too hard.

• The girl will go backwards because of his push.

• The girl will go forward because his force is stronger than hers.

• The girl will fall because she doesn't know how to skate.

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What is the definition of balanced forces?

• Forces that cause an object to accelerate

• Forces that are equal in magnitude and opposite in direction

• Forces that act on different objects

• Forces that cause an object to change shape

Which of the following scenarios is an example of balanced forces?

• A car accelerating on a highway

• A book resting on a table

• A ball falling from a height

• A rocket launching into space

If two forces of 5 N and 5 N act on an object in opposite directions, what is the net force?

• 10 N

• 5 N

• 0 N

• 15 N

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NGSS.MS-PS2-2

What happens to an object when balanced forces act on it?

• It accelerates

• It remains at rest or moves with constant velocity

• It changes direction

• It deforms

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Which of the following is true about balanced forces?

• They always cause motion

• They result in a net force of zero

• They act in the same direction

• They increase the speed of an object

In a tug-of-war game, if both teams pull with equal force, what is the result?

• One team wins

• The rope moves towards one team

• The rope remains stationary

• The rope breaks

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