WUSO WK14-17 replace

What does Newton's First Law of Motion state?

• An object in motion will eventually stop unless acted upon by an external force.

• An object at rest will stay at rest, and an object in motion will stay in motion unless acted upon by an external force.

• The force acting on an object is equal to the mass of that object times its acceleration.

• For every action, there is an equal and opposite reaction.

Which of the following is an example of Newton's First Law?

• A ball rolling on the ground eventually stops due to friction.

• A rocket launching into space.

• A car accelerating on a highway.

• A book falling off a table.

According to Newton's Second Law, what is the formula for force?

Tags

NGSS.MS-PS2-2

• 500 N

• 1000 N

• 2000 N

• 4000 N

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NGSS.MS-PS2-2

What is the difference between mass and weight?

• Mass is the amount of matter in an object, while weight is the force of gravity on an object.

• Mass is measured in newtons, while weight is measured in kilograms.

• Mass changes with location, while weight remains constant.

• Mass is a force, while weight is a measure of inertia.

If an astronaut's mass is 70 kg on Earth, what would be their mass on the Moon?

• 70 kg

• 11.67 kg

• 420 kg

• 0 kg

Which of the following best describes Newton's Third Law of Motion?

• An object at rest stays at rest.

• The force acting on an object is equal to the mass times acceleration.

• For every action, there is an equal and opposite reaction.

• The acceleration of an object is inversely proportional to its mass.

Tags

NGSS.MS-PS2-1

A person pushes a wall with a force of 50 N. What is the force exerted by the wall on the person?

• 0 N

• 25 N

• 50 N

• 100 N

Tags

NGSS.MS-PS2-1

What unit is used to measure force?

• Kilogram

• Meter

• Newton

• Joule

Tags

NGSS.MS-PS2-1

If an object weighs 60 N on Earth, what would be its weight on a planet where the gravitational acceleration is twice that of Earth?

• 30 N

• 60 N

• 120 N

• 240 N

Tags

NGSS.MS-PS2-4