How are forces on the cart different with and without the index card sail?

Because when the cart has an index card in it, it has more surface area which means the more air collision. Or the more KE gets slowed down.

How is the behavior of the index card evidence that there is a contact force on part of the cart subsystem?

The cart went back when air was applied to it.

What relationship between forces and energy do you notice when examining the cycling and percent energy loss data?

When the wind increases, the more energy is used, and there is more energy loss because of air resistance.

What does the overall trend in fuel consumption tell you about applied forces from wind on ships?

When the wind pushes against the ship, I has more fuel to move forward, showing that the wind creates more resistance.

How might collisions with air particles help explain some of the trends in this data?

Collisions with air particles show things down, which explains why there is more air resistance and energy loss when something moves faster.

In which scenarios are there stringer contact forces? -rougher surfaces -smooth surfaces How do you know?

Rougher surfaces have stronger contact forces because the bumps on the surfaces grab on each other more, slowing things down

What is happening to the speed of particles on the surfaces of the objects as they are sliding past each other?

The speed of the particles slow down because friction makes them lose energy as the surfaces rub against each other.

Which way do surface structures bend when object are sliding past each other?

Surface structures bend in the opposite direction of the movement which object slide past each other.

Based on what you know about equal and opposite, how would you describe the direction of friction fore on the moving object and on the surface it is in contact with.

The friction force on the moving object pushes backward, while the surface pushes forward with an equal and opposite force.

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Science Test L9

Question	Answer
How are forces on the cart different with and without the index card sail?	Because when the cart has an index card in it, it has more surface area which means the more air collision. Or the more KE gets slowed down.
How is the behavior of the index card evidence that there is a contact force on part of the cart subsystem?	The cart went back when air was applied to it.
What relationship between forces and energy do you notice when examining the cycling and percent energy loss data?	When the wind increases, the more energy is used, and there is more energy loss because of air resistance.
What does the overall trend in fuel consumption tell you about applied forces from wind on ships?	When the wind pushes against the ship, I has more fuel to move forward, showing that the wind creates more resistance.
How might collisions with air particles help explain some of the trends in this data?	Collisions with air particles show things down, which explains why there is more air resistance and energy loss when something moves faster.
In which scenarios are there stringer contact forces? -rougher surfaces -smooth surfaces How do you know?	Rougher surfaces have stronger contact forces because the bumps on the surfaces grab on each other more, slowing things down
What is happening to the speed of particles on the surfaces of the objects as they are sliding past each other?	The speed of the particles slow down because friction makes them lose energy as the surfaces rub against each other.
Which way do surface structures bend when object are sliding past each other?	Surface structures bend in the opposite direction of the movement which object slide past each other.
Based on what you know about equal and opposite, how would you describe the direction of friction fore on the moving object and on the surface it is in contact with.	The friction force on the moving object pushes backward, while the surface pushes forward with an equal and opposite force.

Created by: user-1980613

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