A Brick Slides on a Horizontal Surface

question 46

Multiple Choice

A brick slides on a horizontal surface.Which of the following will increase the frictional force on it?

• A)Putting a second brick on top
• B)Decreasing the surface area of contact
• C)Increasing the surface area of contact
• D)Decreasing the mass of the brick
• E)None of the above

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Definitions:

Mass

A measure of the amount of matter in an object, typically measured in kilograms or grams.

Weight

The force exerted on an object due to gravity, typically measured in newtons or pounds.

Physical Change

A transformation where the matter's form is modified without converting one substance into a different one.

Centimeters

In the metric system, a length measurement that is one hundredth of a meter.