Solve the Problem $h = 68.6 - 4.9 t ^ { 2 }$

question 440

Multiple Choice

Solve the problem.
-A rock falls from a tower that is 68.6 m high. As it is falling, its height is given by the formula $h = 68.6 - 4.9 t ^ { 2 }$ with t in seconds. How many seconds will it take for the rock to hit the ground (h =0) ?

• A) 8 sec
• B) 3.7 sec
• C) 8.3 sec
• D) 960.4 sec

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Definitions:

Preposterior Analysis

An analysis performed to evaluate the potential worth of a decision or survey before it is conducted.

Prior Probabilities

The likelihood of events or outcomes based on existing knowledge before new evidence is taken into account.

Sample Information

Data or observations collected from a portion of a population, used to make inferences about the whole population.

States Of Nature

Alternative conditions or scenarios in decision-making, reflecting different possible outcomes that are generally outside the control of the decision maker, with their uncertainties critical in risk analysis and management.