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

---

Definitions:

Representativeness Heuristic

is a cognitive shortcut where the likelihood of an object belonging to a category is assessed based on its similarity to a typical case from that category.

Heuristics

Mental shortcuts or rules of thumb that ease the cognitive load of making a decision, often leading to approximation or educated guesses.

Algorithms

Step-by-step procedures or formulas for solving problems or completing tasks.

Mnemonic Devices

Tools that aid in the recall of information, using patterns, acronyms, or associations to help remember data.