S2 Frictional Forces

A force is a push or a pull

• True

• False

Tags

NGSS.MS-PS2-1

NGSS.MS-PS2-2

What is the unit for force?

• kilogram (kg)

• newton (N)

• joule (J)

• metre (m)

We can see forces but not their effects?

• True

• False

Which of the following is NOT an effect of a force?

• changed speed

• changed mass

• changed shape

• changed direction

Who will experience more friction?

• A

• B

The energy change due to friction is...

• heat energy to kinetic energy

• chemical energy to kinetic energy

• kinetic energy to heat energy

• kinetic energy to chemical energy

Tags

NGSS.MS-PS3-5

Which of these does not describe friction?

• A force opposing motion

• When microscopic bumps rub against each other

• When you get a carpet burn from sliding along

• When you speed up on ice

Only solids can produce friction

• true

• false

The rougher the surface, the faster an object will travel over the surface.

• True
• False

Which of the following answers is the most scientific answer for the question:

What is friction?

• The random force between two solids, liquids, or gases.

• The contact force between two solids, liquids, or gases that slide past one another.

• The thing that creates static electricity

• A force that is random