Gravity and Kinetic Energy Investigation 2

True or False: The force of gravity depends on the distance between objects.

• True

• False

True or False: The force of gravity affects the mass of an object.

• True

• False

True or False: The force of gravity affects the weight of an object.

• True

• False

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NGSS.MS-PS2-4

True or False: The force of gravity depends on the mass of interacting objects.

• True

• False

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NGSS.MS-PS2-4

Which statement best states the relationship between mass and gravitational attraction between two objects?

• The less mass an object has, the greater its gravitational force.

• The more mass an object has, the greater its gravitational force.

• The masses of object do not affect gravitational force.

• All objects have the same gravitational force.

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NGSS.MS-PS2-4

Calculate the weight (in Newtons) of a 100 kg person on Earth.

• The weight of a 100 kg person on Earth is 980 N. You find this by taking the mass of 100 kg x acceleration 9.8 m/s2 = force of 980 N.

• The weight of a 100 kg person on Earth is 100 N. This is because mass and weight are the same and do not change.

• The weight of a 100 kg person on Earth is 10.2 N. You find this by taking the mass of 100 kg / the acceleration 9.8 m/s2 = force of 10.2 N.

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NGSS.MS-PS2-2

NGSS.MS-PS2-4

The acceleration of gravity is 28 times greater on the Sun than on Earth. Imagine there is a space suit that would let a person stand on the surface of the Sun. Calculate the weight (in Newtons) of a 100 kg person on Sun.

• The weight of a 100 kg person on Earth is 980 N. You find this by taking the mass of 100 kg x acceleration 9.8 m/s2 = force of 980 N. On the Sun the person would weight 28 times more so you would multiply 980 N x 28 = 27, 440 N.

• The weight of a 100 kg person on Earth is 100 N. This is because mass and weight are the same and do not change. On the Sun the person would weight 28 times more so you would multiply 100 N x 28 = 2, 800 N.

• The weight of a 100 kg person on Earth is 10.2 N. You find this by taking the mass of 100 kg / the acceleration 9.8 m/s2 = force of 10.2 N. On the Sun the person would weight 28 times more so you would multiply 10.2 N x 28 = 285.6 N.

Tags

NGSS.MS-PS2-2

A bag of shells weighs 1.5 N. What is its mass?

• Approximately 1.5 kilograms.

• Approximately 1.5 pounds.

• Approximately 150 grams.

• Approximately 1.5 grams.

Fill in the blanks to complete the sentences with the appropriate word.

The __________________ of an object does not changes when it is taken to another planet.

• mass

• weight

Fill in the blanks to complete the sentences with the appropriate word.

But its __________________ may be different on that planet if the planet’s _________________ is different from Earth’s.

• mass, mass

• weight, weight

• weight, mass

• mass, weight