A Rock Is Dropped from Rest from a Height H

question 25

Multiple Choice

A rock is dropped from rest from a height h above the ground. It falls and hits the ground with a speed of 11 m/s. From what height should the rock be dropped so that its speed on hitting the ground is 22 m/s? Neglect air resistance.

• A)1.4h
• B)2.0h
• C)3.0h
• D)4.0h
• E)0.71h

---

Definitions:

Statistic

A single measure, calculated from sample data, that is used to summarize or describe aspects of the data.

Parameter

A characteristic or measure that defines or summarizes a feature of a statistical model or distribution.

Cardboard Containers

Packaging materials made from layers of paper pulp pressed together, commonly used for shipping or storing goods.

Statistic

A statistic is a numerical value that describes a characteristic or measure derived from a sample of data.