friction

Which of the following is an example of friction that is helpful?

• Brakes used on a bike
• Tires from a car on the road
• Tread on the bottom of your shoes
• All are examples that are helpful

Oil between machine parts would be an example of which type of friction?

• static
• sliding
• fluid
• rolling

Objects balanced on Timmy's head experiences-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction

Tags

NGSS.MS-PS2-4

A type of friction that occurs when air pushes against a moving object causing it to negatively accelerate

• surface area
• air resistance
• descent velocity
• gravity 

Tags

NGSS.MS-PS2-2

Which type of friction occurs when an object moves through a liquid or gas?

• sliding
• fluid
• static
• rolling

Which type of friction occurs when solid surfaces slide over each other?

• rolling
• static
• sliding
• fluid

Which type of friction occurs when an object rolls over or rotates on a surface?

• sliding
• static
• fluid
• rolling

 What is the unit called that measures force?

• weight
• meter
• Newton
• kilogram

Tags

NGSS.MS-PS2-1

Why is it important for basketball players to wear shoes with tread when playing?

• to increase the speed of the player
• to decrease the force between the player and the floor
• to increase friction between the floor and the player’s feet
• to decrease the amount of force needed for the player to move

Wheels on a skateboard most likely experiences-

• Rolling Friction
• Sliding Friction
• Fluid Friction
• Static Friction