A 05-Kg Model Helicopter Initially at Rest on the Ground,starts to to Move

question 86

Multiple Choice

A 0.5-kg model helicopter initially at rest on the ground,starts to move directly up under the effect of a lift force of magnitude of 7.4 N.After 12 seconds the engine stops and the helicopter starts free fall.Ignoring air resistance,calculate the helicopter's velocity just before hitting the ground.

• A)-36.7 m/s
• B)-48.4 m/s
• C)-65.5 m/s
• D)-103 m/s
• E)-116 m/s

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Definitions:

Required Return

The minimum return an investor expects to achieve by investing in a particular asset or project.

Operating Cash Flow

The amount of cash generated by a company’s normal business operations, indicating whether a company is able to generate sufficient positive cash flow.

Top-Down Approach

An investment strategy that begins with analyzing macroeconomic factors, then drilling down to the industries and finally individual companies to make investment decisions.

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The total upfront cost required to initiate an investment, including all relevant expenses minus any cash inflows.