A Girl Throws a Stone from a Bridge

question 16

Multiple Choice

A girl throws a stone from a bridge.Consider the following ways she might throw the stone.The speed of the stone as it leaves her hand is the same in each case,and air resistance is negligible. Case A: Thrown straight up.
Case B: Thrown straight down.
Case C: Thrown out at an angle of 45° above horizontal.
Case D: Thrown straight out horizontally.
In which case will the speed of the stone be greatest when it hits the water below?

• A) Case A
• B) Case B
• C) Case C
• D) Case D
• E) The speed will be the same in all cases.

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Definitions:

ENT

Ear, Nose, and Throat, a branch of medicine focused on the diagnosis and treatment of disorders of these areas.

Abbreviation

A shortened form of a word or phrase, used to save space or avoid repetition.

Kilogram

A unit of mass equal to 1,000 grams, used in the metric system.

Gram

A metric unit of mass equal to one-thousandth of a kilogram, also used in microbiology as a staining method to classify bacteria.