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Understanding Friction and Stopping Distances

Last updated 3 months ago

15 questions

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Question 15

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Which surface will have less friction: ice or sand?

Ice

Sand

What is the function of brake pads in a car?

To decrease friction

To increase friction

To decorate the wheels

No function

Can friction generate heat?

True

False

The rougher the surface, the ___ the friction.

Higher

Lower

What factors can affect stopping distances?

Speed

Weather conditions

Friction

Car's color

When we apply brakes to a bicycle, which type of friction comes into play?

rolling friction

sliding friction

fluid friction

static friction

Is the stopping distance greater at higher speeds?

Yes

No

All surfaces have the same amount of friction.

True

False

What can increase the friction between two surfaces?

Making the surfaces rougher

Applying more force

Reducing the contact area

Adding a lubricant

Wet roads increase the stopping distance of vehicles.

True

False

What happens to friction when we oil a surface?

Decreases

Increases

Remains the same

Does the weight of an object affect the friction?

Yes

No

In a car, which systems work together to stop the car once the brake pedal is pressed?

Electrical System

Braking System

Exhaust System

Steering System

In space, where there is no resistance or friction, an object in motion will keep moving forever unless acted on by another force.

True

False

If a driver doubles their speed, the stopping distance will...

remain the same

double

quadruple