Friction & Force

How does friction affect speed?

• more friction decreases speed
• more friction increases speed
• less friction decreases speed
• less friction doesn't affect speed

Tags

NGSS.MS-PS2-2

Friction is a force that acts in an ___________ direction of movement.

• similar
• opposite
• parallel
• west

 What is the unit called that measures force?

• weight
• meter
• Newton
• kilogram

Tags

NGSS.MS-PS2-1

What is force?

• A force is a push or a pull upon an object resulting from the object's interaction with another object.
• something used in Star Wars 
• It is the amount of space between two points.
• It is Superman's power

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

What is a net force?

• The total amount of force applied to an object.
• The amount of friction on an object.
• The amount of force a net could put on an object.
• The amount force applied to a net.

Tags

NGSS.MS-PS2-2

NGSS.MS-PS2-1

What surface would have the most friction?

• Glass
• Marble
• Pool table
• Sandpaper

Matt had a toy truck weighing 15 grams and a toy car weighing 6 grams. Using the same amount of force on each toy, he pushed them both across his desk. The car reached the other side of the desk in 1.5 seconds, but it took the truck 3.5 seconds to reach the the other side of the desk. Why did the car travel the same distance in a shorter amount of time?

• The car had less mass and traveled at a faster speed than the truck.
• The car had more mass and traveled at a faster speed than the truck.
• The truck had more mass and traveled at a faster speed than the car.

A person is pushing a lawnmower. Which best describes what is occurring?

• Mass is being applied to the lawnmower.
• Force is being applied to the lawnmower.
• There is no friction acting on the lawnmower.
• There is no gravity acting on the lawnmower.

Tags

NGSS.MS-PS2-2

Which of the following would increase the motion of a ball after it is kicked?

• a high, grassy surface
• a surface sloped uphill
• a surface sloped downhill

Tags

NGSS.MS-PS2-2

Q4. Which is not the advantage of friction?

• Friction helps in walking.

• Friction allows us to write on paper.

• Cars and buses move safely on roads due to friction.

• Friction causes wear and tear.