1 Balanced and Unbalanced forces review

Multiple Choice

Which of the following best describes a balanced force?

• Two forces of equal strength acting in opposite directions, causing no change in motion.

• A single force acting on an object, causing it to move.

• Two forces of unequal strength acting in opposite directions, causing a change in motion.

• A force that only acts when objects are touching.

Open Ended

What is an unbalanced force?

Multiple Choice

Forces that are equal in strength and opposite in direction are:

• balanced forces

• unbalanced forces

• always result in motion

• always the result of motion

Multiple Select

Select all the effects that unbalanced forces can have on an object.

• Change in position

• Change in direction

• Change in color

• Change in speed

Open Ended

Why doesn’t a ball roll on forever after being kicked at a soccer game?

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​White Boards

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​White Boards

Open Ended

How do unbalanced forces cause a change in direction of an object?

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Open Ended

What would have to change to make the train moving at a constant speed experience an unbalanced force?

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Open Ended

Is slowing down balanced or unbalanced? Why?

Multiple Choice

Which of the following scenarios best represents a balanced force?

• A car accelerating from the start line

• A skier coming down the mountain

• A lamp sitting on a desk

• A block being pushed with different forces from both sides

Open Ended

Why did the wooden block move only a short distance on the table without lubricant, but traveled a much greater distance with the same force after the addition of lubricant?

Open Ended

How would you apply your knowledge of balanced and unbalanced forces to explain the motion of an object in a real-life scenario?

Multiple Choice

What is the difference between balanced and unbalanced forces, and how do they affect the motion of an object?

• Balanced forces do not change the motion of an object, while unbalanced forces cause a change in motion.

• Balanced forces increase the speed of an object, while unbalanced forces decrease it.

• Balanced forces only act on stationary objects, while unbalanced forces act on moving objects.

• Balanced forces cause objects to move in circles, while unbalanced forces make them stop.

Multiple Choice

What is the difference between balanced and unbalanced forces when analyzing the motion of an object?

• Balanced forces do not change the motion of an object, while unbalanced forces do.

• Balanced forces always move objects faster, while unbalanced forces slow them down.

• Balanced forces only act on objects at rest, while unbalanced forces act on moving objects.

• Balanced forces are weaker than unbalanced forces.