A Lift Is Used to Raise Objects to the Back

question 60

Multiple Choice

A lift is used to raise objects to the back of a moving truck.If the maximum power the lift is capable of delivering is 98 W,what is the maximum constant speed with which this lift can raise a 5.0 kg crate straight up from the ground to the back of the moving truck? The back of the moving truck is 5.0 m above the ground.

• A)19 m/s
• B)2.0 m/s
• C)1.5 m/s
• D)7.0 m/s
• E)3.2 m/s

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Definitions:

Duopoly

A market structure dominated by two companies, resulting in limited competition.

Demand Curve

A chart depicting how the price of an item correlates with the amount of that item consumers are ready and capable of buying at different price levels.

Marginal Cost

The extra cost involved in producing one more unit of a product or service.

Cartel

An association of independent companies or organizations formed to control production, pricing, and marketing of goods to suppress competition.