Physics, 02.07.2021 17:10 mar4894

Hello, Watch the video of the can moving across the surface. What can the child do to create a greater force of friction? two hands moving a can back and forth on a table

Make the table wet.
Place a cloth on the table.
Use less force when pushing the can.
Use more force when pushing the can.
Question 6(Multiple Choice Worth 2 points)
(06.03 MC)

Where is the friction that allows the skater to complete the move that is occurring in this image?

a girl ice skating
© Wildcow / iStock 2018

The movement of her skirt through the air
The movement of her body through the air
The point of contact between the skates and the ice
The point of contact between the skates and her foot
Question 7(Multiple Choice Worth 2 points)
(06.03 LC)

If you roll a ball down a ramp, which factor will have the greatest effect on the amount of friction created?

Force applied to the ball
Speed of the ball
Texture of the surface
Weight of the ramp
Question 8(Multiple Choice Worth 2 points)
(06.03 MC)

Heather rolls a marble over sand paper and then over a flat table. Which statement best describes the observations she made?

When the marble is pulled, the friction on the table is greater.
When the marble is pushed, the friction is greater on the sandpaper.
The amount of friction is about the same on both surfaces.
The force of gravity pulling the marble lessens the friction between the surfaces.
Question 9(Multiple Choice Worth 2 points)
(06.03 LC)

How does the force of friction affect the motion of objects?

It causes the object to change direction.
It causes the object to create heat energy.
It causes the object to create kinetic energy.
It causes the object to slow down or stop.
Question 10(Multiple Choice Worth 2 points)
(06.03 LC)

All surfaces have texture, which means it affects how things move over it. When it takes a long time for friction to slow down an object, what is most likely true about the surface the object is moving on?

The surface is dry.
The surface is rough.
The surface is uneven.
The surface is smooth.
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FDK411.12

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Hello, Watch the video of the can moving across the surface. What can the child do to create a great...

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