Scope 2 Exam Review

All of the following are forces that can be applied over a distance except

• gravitational force.

• applied force.

• electrical force.

• magnetic force.

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1. Students are investigating how mass affects the force needed to move an object.

3. Which of the following changes to their setup would result in a larger force 

   reading on the spring scale?

• Drag the object a shorter distance across the table.

• Change out the mass for a 15 g mass.

• Drag the object a greater distance across the table.

• Change out the wood block for a steel one.

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If a moving object maintains a constant speed, there must be no change in

• mass.

• force.

• weight.

• volume.

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NGSS.MS-PS3-1

Why is there less acceleration on the bottom Wagon 2?

• There is more force acting on it.

• There is less force acting on it.

• It has more mass, so harder to accelerate.

• It has less mass, so easier to accelerate.

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What would cause the same force and acceleration for both boxes?

• They're balanced forces.

• They're unbalanced forces.

• The both have forces being applied, in a push or a pull.

• Both boxes are the same mass.

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NGSS.MS-PS2-1

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A family takes a car trip, traveling with a motion of 80 miles every hour they travel. Is their car accelerating?

• No, because they are maintaining 80 m/hr, not gaining.

• 1. No, because they are moving forward.

• Yes, because they are gaining 80 m/hr every second.

• Yes, because they are moving forward.

A train is traveling from Wyoming to Colorado, traveling at 100 mi/hr. Another train is traveling from Utah to Arizona, traveling at 100 mi/hr.

What do the two trains have in common?

• Their speed

• Their velocity

• Their acceleration

• Nothing

What could you change about Wagon 1 to get it to accelerate the same as Wagon 2?

• Apply more force.

• Apply less force.

• Add more mass.

• Add less mass.

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When two forces are acting in the same direction, they _____ in strength, because they are added together.

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NGSS.MS-PS2-2

Two forces acting _______ each other diminish the overall net force, as they are subtracted.