Friction as a Force

The shape of vehicles is made ____________ to reduce friction.

FORCE WHICH HELPS US TO WALK

• MUSCULAR FORCE

• FRICTION FORCE

• MAGNETIC FORCE

• GRAVITATIONAL FORCE

HOW WE WILL LIGHT A MATCHSTICK

• FRICTION

• MUSCULAR

• GRAVITY

• MAGNET

FRICTION ---------------- A MOVING OBJECT

• SLOW DOWN

• STOPS

• PULLS

• NONE OF THESE

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

• similar

• opposite

• parallel

• west

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

Movers slide a box down the ramp of a truck.
What helps slow the box as it slides to the bottom of the ramp?

• friction

• gravity

• inertia

• magnetism

Tags

NGSS.MS-PS2-2

What are 2 factors that determine the amount of friction between 2 objects?

• Force and roughness between surfaces

• hills and valleys and how smooth or rough the surface is

• Amount of force and amount of surface the comes in contact

• The force and the weight exerted on the surfaces

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

How does friction affect speed?

• more friction decreases speed

• more friction increases speed

• less friction decreases speed

Tags

NGSS.MS-PS3-1

NGSS.MS-PS3-5