Weight & Newton's 3rd Law

What is the primary difference between mass and weight?

• Mass is measured in pounds, weight in kilograms

• Weight is a force while mass is not

• Mass changes with location while weight remains constant

• They are essentially the same thing measured differently

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NGSS.MS-PS2-4

If an object has a mass of 25-kg, what is its weight in Newtons on Earth?

• 245 N

• 225 N

• 235 N

• 215 N

Which property is a scalar quantity?

• Velocity

• Force

• Mass

• Acceleration

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NGSS.MS-PS1-5

NGSS.MS-PS3-1

One Newton is equivalent to:

• 0.115 lbs

• 0.445 lbs

• 0.335 lbs

• 0.225 lbs

What happens to an object's weight if its mass doubles?

• It remains the same

• It quadruples

• It halves

• It doubles

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NGSS.MS-PS2-4

The acceleration due to gravity on the Moon is:

• 1.6 m/s²

• 2.6 m/s²

• 3.2 m/s²

• 4.8 m/s²

Weight is measured in:

• Kilograms

• Newtons

• Meters per second

• Joules

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NGSS.MS-PS2-4

If an object weighs 490-N on Earth, its mass is approximately:

• 40 kg

• 60 kg

• 50 kg

• 45 kg

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NGSS.MS-PS2-2

Which of these remains constant regardless of location in the universe?

• Weight

• Mass

• Gravitational force

• Acceleration

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NGSS.MS-PS1-5

The formula W = mg represents:

• Weight equals mass times the force of gravity

• Weight equals mass times gravitational acceleration

• Weight equals milligrams

• Weight equals momentum times gravity

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NGSS.MS-PS2-4