Kinematics Y Direction

Does downward movement of an object have a negative or positive velocity?

• Negative

• Positive

When an object starts from rest, what is its original velocity?

• Depends on the problem

• 0

• Always positive

• Always negative

In Newtonian physics, ________________ is any motion of a body where gravity is the only force acting upon it.

• kinematics

• free fall

• mechanics

• velocity

Tags

NGSS.HS-PS2-4

Which of the following graphs best represents free fall motion?

• 
• 
• 
• 

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NGSS.MS-PS3-1

NGSS.MS-PS3-5

Juan is standing on the top observation deck of the Eiffel Tower in Paris at a height of 300 meters. He drops his cell phone. How fast will the phone be traveling when it hits the ground? Ignore the effect of air resistance.

• 9.8 m/s

• 76.68 m/s

• 149.76 m/s

• 46.99 m/s

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

Heavier objects free fall faster than lighter objects.

• True

• False

Tags

NGSS.MS-PS2-4

Which would hit the ground first if dropped from the same height in a vacuum—a feather or a metal bolt?

• the feather
• the metal bolt
• They would hit the ground at the same time.
• They would be suspended in a vacuum.

Tags

NGSS.HS-PS2-4

Do free falling objects move at constant velocity or do they accelerate?

• Falling objects accelerate at -9.8 m/s²
• Falling object move at constant velocity
• Falling objects accelerate at 100 m/s²
• It depends on the mass: heavy objects accelerate, light objects do not

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

A baseball is thrown up into the air. What happens to the velocity as the ball rises in the air?

• the velocity increases

• the velocity decreases

• the velocity remains constant

Tags

NGSS.HS-PS2-1

A baseball is thrown up into the air. What happens to the acceleration as the ball rises in the air?

• the acceleration increases

• the acceleration decreases

• the acceleration remains constant

Tags

NGSS.MS-PS2-4

NGSS.MS-PS2-2