12.1 Forces

What is the primary effect of gravity on an object according to the text?

• It causes the object to float.

• It pulls the object downward.

• It makes the object lighter.

• It pushes the object upward.

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NGSS.5-PS2-1

Which type of friction is mentioned as acting in the opposite direction to motion?

• Sliding friction

• Rolling friction

• Static friction

• Air resistance

According to the text, what can force change about an object?

• Color and shape

• Speed or direction

• Weight and size

• Temperature and state

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

What does the text suggest is a key concept to understand about forces?

• They can only push objects.

• They are only active during natural phenomena.

• They can be both a push and a pull.

• They operate independently of motion.

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NGSS.MS-PS2-1

NGSS.MS-PS2-2

How does the text describe the effect of air resistance?

• It increases the speed of falling objects.

• It decreases the mass of objects.

• It acts against the gravity.

• It acts in the direction of motion.

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NGSS.MS-PS3-5

What is the unit of force as mentioned in the text?

• Kilogram

• Meter per second squared

• Newton

• Joule

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NGSS.HS-PS2-1

NGSS.HS-PS2-4

According to the text, what does one newton of force correspond to?

• The force needed to accelerate 1 kg mass at 1 meter per second

• The force needed to accelerate 1 kg mass at 1 meter per second squared

• The force needed to accelerate 1 kg mass at 2 meters per second squared

• The force needed to accelerate 2 kg mass at 1 meter per second squared

What happens when two forces act in the same direction on an object, as described in the text?

• The forces cancel each other out.

• The object does not move.

• The individual forces add together to form a larger force.

• The object moves in the opposite direction.

Tags

NGSS.MS-PS2-2

What is the effect of combining forces that act in opposite directions according to the text?

• It creates a net force that is the sum of the two forces.

• It decreases the overall force acting on the object.

• It increases the speed of the object.

• It results in a net force that is the difference between the two forces.

Tags

NGSS.MS-PS2-2

What is the primary benefit of regular exercise according to the American Academy of Family Physicians?

• It increases the risk of heart disease.

• It helps to maintain a healthy weight.

• It reduces mental stress.

• It improves academic performance.