Free Fall Tower

Vocabulary: What does 'air resistance' mean?

• The force that opposes the motion of objects through air

• The ability of air to support weight

• The speed at which air moves

• The temperature of the air

Tags

NGSS.MS-ESS2-5

Form hypothesis: How do you think objects will fall when there is no air?

• Objects will fall at different speeds depending on their weight.

• Objects will fall at the same speed regardless of their weight.

• Objects will not fall at all.

• Objects will float upwards.

Tags

NGSS.MS-PS2-4

Analyze: The watermelon is heaviest, followed by the soccer ball, golf ball and ping pong ball. How does the weight of an object relate to how fast it falls with a parachute on Earth?

• Heavier objects fall faster with a parachute.

• Lighter objects fall faster with a parachute.

• Weight does not affect the speed of falling with a parachute.

• All objects fall at the same speed with a parachute.

Tags

NGSS.MS-PS2-4

A bowling ball and a bag of potato chips are dropped at the same time from a tall tower on Earth. What happens?

• 
  

• The bowling ball hits the ground first.

• • The bag of potato chips hits the ground first.

  
  

• Both objects hit the ground at the same time.

• The objects don't move at all. They just stay where they were released.

Tags

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A bowling ball and a bag of potato chips are dropped at the same time from a tall tower on the Moon. There is no air on the Moon. What happens?

• The bowling ball hits the ground first.

• The bag of potato chips hit the ground first.

• Both objects will hit the ground at the same time.

• Both objects won't move at all. They will just stay where they were released.

Tags

NGSS.MS-PS2-2

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A 46-gram golf ball and a 400-gram soccer ball were released at the same time from the top of a tall tower. What is the best explanation of this picture?

• Heavier objects always fall faster than lighter objects

• Lighter objects always fall faster than heavier objects.

• The soccer ball was affected by air resistance less than the golf ball.

• The soccer ball was affected by air resistance more than the golf ball.

Tags

NGSS.MS-PS2-4

On Earth, a plastic ball was dropped from two different heights. The speed of the ball when it hit the ground was recorded each time. What will the ball's speed be when it hits the ground if it is dropped from a height of 40 meters?

• 6 meters per second

• 8 meters per second

• 12 meters per second

• 16 meters per second

Tags

NGSS.MS-PS2-4

NGSS.MS-PS3-1

NGSS.MS-PS3-5

The graph below describes a falling object. What probably happened?

• At 2 seconds the atmosphere was changed from air to a vacuum.

• At 2 seconds a parachute opened.

• At 2 seconds the object hit the ground and stopped.

• At 2 seconds the object stopped going up and started going down.

Tags

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Air resistance 

• is a force that pushes up when objects fall
• is the same as gravity
• is a force that pushes down when an object falls

Tags

NGSS.MS-PS2-2

The upward force acting on the parachute is called ______________.

• Force of friction

• Force of gravity

• Normal force

• Air resistance

Tags

NGSS.HS-PS2-1