What is the definition of balanced forces?

• Forces that cause an object to start moving

• Forces that are equal in magnitude and opposite in direction, resulting in no change in motion

• Forces that cause an object to accelerate

• Forces that act in the same direction

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DOK Level 1: Recall

TEKS.SCI.7.7D

What is the definition of unbalanced forces?

• Forces that are equal in magnitude and opposite in direction

• Forces that cause an object to remain at rest

• Forces that are not equal and/or not opposite, causing a change in motion

• Forces that cancel each other out

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DOK Level 1: Recall

TEKS.SCI.7.7D

Which of the following is an example of balanced forces?

• A book resting on a table

• A car accelerating on a highway

• A ball rolling down a hill

• A person pushing a stationary car

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DOK Level 1: Recall

TEKS.SCI.7.7D

Which of the following is an example of unbalanced forces?

• A book resting on a table

• A car moving at a constant speed

• A ball being kicked

• A person standing still

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DOK Level 1: Recall

TEKS.SCI.7.7D

According to Newton's First Law of Motion, what will happen to an object at rest if balanced forces act on it?

• It will start moving

• It will remain at rest

• It will accelerate

• It will change direction

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DOK Level 1: Recall

TEKS.SCI.7.7D

According to Newton's First Law of Motion, what will happen to an object in motion if unbalanced forces act on it?

• It will continue moving at the same speed and direction

• It will stop moving

• It will change its speed or direction

• It will remain at rest

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DOK Level 1: Recall

TEKS.SCI.7.7D

A car is moving at a constant speed on a straight road. Which of the following statements is true?

• The forces acting on the car are balanced

• The forces acting on the car are unbalanced

• The car is accelerating

• The car is decelerating

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DOK Level 2: Skill/Concept

TEKS.SCI.7.7D

A person pushes a box, and it starts to move. What can be inferred about the forces acting on the box?

• The forces are balanced

• The forces are unbalanced

• There are no forces acting on the box

• The box is in equilibrium

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DOK Level 2: Skill/Concept

TEKS.SCI.7.7D

If a soccer ball is at rest and then kicked, causing it to move, which law of motion is being demonstrated?

• Newton's First Law of Motion

• Newton's Second Law of Motion

• Newton's Third Law of Motion

• Law of Universal Gravitation

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DOK Level 2: Skill/Concept

TEKS.SCI.7.7D

How do balanced forces affect the motion of an object?

• They cause the object to accelerate

• They cause the object to decelerate

• They do not change the object's state of motion

• They cause the object to change direction

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DOK Level 2: Skill/Concept

TEKS.SCI.7.7D