John Throws a Rock Down with Speed 11 M/s from the Top

question 58

Multiple Choice

John throws a rock down with speed 11 m/s from the top of a 25-m tower.If g = 9.8 m/s² and air resistance is negligible,what is the rock's speed just as it hits the ground?

• A)19 m/s
• B)25 m/s
• C)610 m/s
• D)22 m/s
• E)​12 m/s

---

Definitions:

Insightful

Having or showing an accurate and deep understanding; perceptive.

Availability Heuristic

A mental shortcut that relies on immediate examples that come to a person’s mind when evaluating a specific topic, concept, method or decision.

Planning Fallacy

The tendency to underestimate the time, costs, and risks of future actions and at the same time overestimate the benefits of the same actions.

Intelligence

The ability to learn from experience, solve problems, and use knowledge to adapt to new situations.