Choose the One Alternative That Best Completes the Statement or Answers

question 141

Multiple Choice

Choose the one alternative that best completes the statement or answers the question.
Solve the problem.
-If an object is thrown straight upward from the ground with an initial speed of 112 feet per second, then its height, $h$ , in feet after $t$ seconds is given by the equation $h ( t ) = - 16 t ^ { 2 } + 112 t$ . Find the instantaneous speed of the object at $t = 6$

• A) \(112 \mathrm { ft } / \mathrm { sec }\)
• B) \(- 464 \mathrm { ft } / \mathrm { sec }\)
• C) \(- 80 \mathrm { ft } / \mathrm { sec }\)
• D) \(16 \mathrm { ft } / \mathrm { sec }\)

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Definitions:

Circularity

A geometric term referring to the attribute of a shape being round, measured typically by how much a part deviates from a perfect circle.

Feature Control Frame

A rectangular box that contains the geometric characteristics and tolerances applicable to the features of parts in technical drawings.

Datum Surface

A reference surface or point from which measurements are taken to ensure parts are manufactured, or assembled correctly.

Flat Surface

A surface that has a continuous planar extension in which any two points can be joined by a straight line that lies entirely in the surface.