Solve the Problem $s ( t ) = - 5 \cos 5 \pi t$

question 24

Multiple Choice

Solve the problem.
-The position of a weight attached to a spring is $s ( t ) = - 5 \cos 5 \pi t$ inches after $t$ seconds. When does the weight first reach its maximum height?

• A) After \(\frac { 5 } { 4 } \mathrm { sec }\)
• B) After \(\frac { 1 } { 5 } \sec\)
• C) After \(\frac { \pi } { 5 } \sec\)
• D) After -

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Definitions:

Net Present Value

A financial metric that calculates the present value of all future cash flows associated with an investment, minus the initial investment cost.

Present Value

The current worth of a future sum of money or stream of cash flows given a specified rate of return.

Unequal Lives

A term used in capital budgeting to describe projects or investments with different durations.

Replacement Chain Method

A capital budgeting technique that compares different investment projects with unequal lifespans by calculating their equivalent annual cost.