Forces and Motion Module 1 DBA Review

Which of the following best describes the difference between mass and weight?

• Mass is a scalar quantity, while weight is a vector quantity.
• Mass is a measure of the amount of matter in an object, while weight is the force of gravity acting on that object.
• Mass is the force exerted by an object, while weight is the amount of matter in an object.
• Mass is a measure of volume, while weight is a measure of density.

What does the Law of Universal Gravitation state?

• Particles repel each other based on their masses

• Gravity only affects objects on Earth

• The force of attraction is directly proportional to the distance between particles

•  Every object in the universe attracts every other object with a force that depends on their masses and the distance between them.
  

Answer explanation

Every object in the universe attracts every other object with a force that depends on their masses and the distance between them.

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NGSS.MS-PS2-4

Which statement is true regarding gravitational forces?

• Gravitational forces are always attractive.
• Gravitational forces are not affected by mass.
• Gravitational forces act only on Earth.
• Gravitational forces are always repulsive.

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NGSS.MS-PS2-4

What happens to the gravitational force between two objects if the mass of one object increases?

• Increases
• Becomes negative
• Remains constant
• Decreases

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NGSS.MS-PS2-4

What type of force is friction?

• Gravitational force
• Electromagnetic force
• Contact force
• Nuclear force

What force holds the planets in motion around the sun?

• Magnetic
• Electrical
• Gravitational
• Air Resistance

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NGSS.MS-ESS1-2

NGSS.MS-PS2-4

Which of the following is a non-contact force?

• Electromagnetic force
• Gravitational force
• Frictional force
• Nuclear force

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NGSS.MS-PS2-3

NGSS.MS-PS2-5

How do contact forces differ from non-contact forces?

• Contact forces do not involve any force at all.
• Non-contact forces only occur in a vacuum.
• Contact forces are always attractive forces.
• Contact forces require physical contact between objects, while non-contact forces can act over a distance without direct contact.

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NGSS.MS-PS2-5

A scientific law is different from a societal law because:

• A scientific law describes natural phenomena, while a societal law regulates human behavior.
• A scientific law is based on opinions, while a societal law is based on facts.
• A scientific law changes frequently, while a societal law remains constant.
• A scientific law is enforced by scientists, while a societal law is enforced by politicians.

If a 5 N force pushes to the right and a 3 N force pushes to the left, what is the net force and its direction?

• The net force is 8 N to the left.
• The net force is 5 N to the right.
• The net force is 3 N to the left.
• The net force is 2 N to the right.

Tags

NGSS.MS-PS2-2