Free Fall and Proj Motion

What happens to the total distance traveled for a falling ball?

• The distance remains constant as the ball falls

• The distance increases by the same amount every second as the ball falls

• The distance increases at an exponential rate as the ball falls

• The distance decreases at a uniform rate

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

• It decreases by the same amount every second

• It increases by the same amount every second

• It is constant

• It increases at an exponential rate as it falls

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NGSS.HS-PS2-1

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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

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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

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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

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In a normal environment (non-vacuum), 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 ball is thrown in the air with an initial velocity of 40 m/s. How long does it take to reach back to the point it was thrown from?

• 4 seconds 
• 2 seconds 
• 6 seconds 
• 8 seconds 

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A ball is thrown up in the air with an initial velocity of 40 m/s. What is the ball's velocity after 2 seconds? 

• 0 m/s 
• 20 m/s traveling upward
• 20 m/s traveling downward
• 40 m/s traveling downward

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NGSS.HS-PS2-1

NGSS.HS-PS2-4

A ball is thrown up in the air with an initial velocity of 40 m/s. What is the ball's velocity after 6 seconds? 

• 20 m/s traveling upward.
• 10 m/s traveling downward.
• 20 m/s traveling downward. 
• 30 m/s traveling downward. 

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NGSS.HS-PS2-1

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

• 77.5 m/s

• 149.76 m/s

• 46.99 m/s

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NGSS.HS-PS2-1

NGSS.HS-PS2-4