Gravity and Free Fall

What is the approximate value of acceleration due to gravity on Earth?

• 9.8 m/s2

• 7.0 m/s2

• 8.9 m/s2

• 8.0 m/s2

What happens to the acceleration due to gravity as an object falls towards the

surface of the earth?

• The acceleration due to gravity remains constant.

• The acceleration due to gravity decreases.

• The acceleration due to gravity increases.

• The acceleration due to gravity fluctuates.

If an object fall at an acceleration of 9.8 m/s2, what is its speed as it falls down per second?

• 9.8 m/s

• 4.9 m/s

• 12.0 m/s

• 6.0 m/s

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NGSS.MS-PS2-4

Which of the following factors is considered when an object is considered to be in free fall?

• The object is falling in the absence of air resistance.

• The object changes its acceleration as it falls.

• The object has a constant velocity as it falls.

• The object is slowing down as it falls.

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NGSS.MS-PS2-4

What happens to the force-mass ratio of an object as it falls down in the absence of air resistance?

• The force-mass ratio increases.

• The force-mass ratio decreases.

• The force-mass ratio fluctuates.

• The force-mass ratio remains constant.

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NGSS.MS-PS2-2

How would you compare the speed of a heavy object to a light object if they fall at a certain height at the same time?

• Heavy objects have greater speed than the light object.

• Heavy objects have less speed than the light object.

• Heavy and light objects have the same speed.

• Heavy objects have a constant speed while the light object has a changing speed.

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NGSS.MS-PS3-1

What happens to the velocity of an object as it falls down to the surface of the earth?

• The velocity of an object increases.

• The velocity of an object decreases.

• The velocity of an object fluctuates.

• The velocity of an object remains constant.

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NGSS.MS-PS2-4

NGSS.MS-PS2-2

Which of the following correctly describes the direction of the acceleration of a freely falling object?

• The acceleration is always directed upward.

• The acceleration is always directed downward.

• The acceleration is always perpendicular with the object’s velocity.

• The acceleration is always in opposite direction with the object’s velocity.

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NGSS.HS-PS2-4

What happens to the acceleration of a freely falling body that speeds up as it falls towards the ground?

• Its acceleration increases.

• Its acceleration decreases.

• Its acceleration is equal to zero.

• Its acceleration remains constant.

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NGSS.MS-PS2-4

What is the SI unit for the acceleration due to gravity of a falling object?

• m/s2

• m/s3

• m/s

• m/s4

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