physics

What happens to the velocity of a ball as it is dropped off a cliff? 

• It decreases at a uniform rate 
• It increases at a uniform rate 
• It is constant 
• It increases at a non-uniform rate

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NGSS.HS-PS2-1

NGSS.HS-PS2-4

What is the velocity of a ball that has been dropped off a cliff after 1 , 2, 3, 4, and 5 seconds? (concept development page 4). 

• 10, 20, 30, 40, 50 m/s
• 5, 10, 15, 20, 25 m/s
• 5, 20, 45, 80,125 m
• 10,10,10,10,10 m/s

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NGSS.HS-PS2-1

NGSS.HS-PS2-4

What is the distance a ball falls after 1,2,3,4,5 seconds?

• 10, 20, 30, 40, 50 m (meters)
• 5, 20, 45, 80,125 m (meters)
• 5, 10,15, 20, 25 m (meters)
• 10, 25, 60, 90,120 m (meters)

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NGSS.HS-PS2-1

NGSS.HS-PS2-4

What is the acceleration of a ball that is dropped off the side of a cliff after 1,2,3,4,5 seconds?

• 5,10,15, 20, 25 m/s²
• 10, 20, 30, 40, 50 m/s²
• 5, 20, 45, 80, 125 m/s²
• 10,10,10,10,10 m/s²

Tags

NGSS.HS-PS2-1

NGSS.HS-PS2-4

In a normal environment, why does a bowling ball and feather hit the ground at different times when dropped from the same height?

• They don't; they hit the ground at the same time.
• One is more dense than the other.
• One is heavier than the other.
• Air resistance 

A textbook is dropped from a second floor window and falls to the ground. What happens to the velocity as the book falls to the ground

• the velocity increases

• the velocity decreases

• the velocity remain constant

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NGSS.HS-PS2-1

A textbook is dropped from a second floor window and falls to the ground. What happens to the acceleration as the book falls to the ground

• the acceleration increases

• the acceleration decreases

• the acceleration remains constant

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NGSS.HS-PS2-1

A textbook is dropped from a second floor window and falls to the ground. What direction is the velocity?

• upward

• downward

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NGSS.HS-PS2-1

NGSS.HS-PS2-4

A textbook is dropped from a second floor window and falls to the ground. What direction is the acceleration?

• upward

• downward

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NGSS.HS-PS2-1

NGSS.HS-PS2-4

Which graph could represent a velocity-time graph for an object thrown straight downwards with no air resistance?

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NGSS.HS-PS2-1