A Block Slides on a Rough Horizontal Surface from Point

question 20

Multiple Choice

A block slides on a rough horizontal surface from point A to point B. A force (magnitude P = 2.0 N) acts on the block between A and B, as shown. Points A and B are 1.5 m apart. If the kinetic energies of the block at A and B are 5.0 J and 4.0 J, respectively, how much work is done on the block by the force of friction as the block moves from A to B?

• A) −3.3 J
• B) +1.3 J
• C) +3.3 J
• D) −1.3 J
• E) +4.6 J

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Definitions:

Elasticity Of Supply

A measure of how much the quantity supplied of a good changes in response to a change in its price.

Tax Revenue

It's the income that is collected by governments through taxation.

Excise Tax

A tax on specific goods, such as alcohol and tobacco, typically imposed at the point of manufacture or sale.

Total Tax Revenue

The total amount of money collected by the government from taxes, which can come from various sources like income taxes, sales taxes, and corporate taxes.