When You Drop a Pebble from Height H,it Reaches the Ground

question 181

Multiple Choice

When you drop a pebble from height H,it reaches the ground with speed V assuming there is no air resistance.From what height should you drop it so it will reach the ground with twice speed?

• A) \(\sqrt { 2 }\) H
• B)2H
• C)4H
• D)8H
• E)16H

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Definitions:

Parametric Test

A statistical test that makes assumptions about the parameters of the population distribution from which the sample was drawn.

Wilcoxon Rank Sum Test

A non-parametric statistical test used to compare two independent samples to assess whether their population mean ranks differ.

Wilcoxon Rank-sum Test

A nonparametric statistical test used to compare two independent samples to determine if they come from the same population or not, based on rank sums.

Wilcoxon Rank Sum Test

A non-parametric statistical test used to compare two independent samples to assess whether their populations have identical distribution.