Solve the Problem B) C) D)

question 29

Multiple Choice

Solve the problem. Unless stated otherwise, assume that the projectile flight is ideal, that the launch angle is measured from the horizontal, and that the projectile is launched from the origin over a horizontal surface
-An ideal projectile is launched from the origin at an angle of α radians to the horizontal and an initial speed of 175 ft/sec. Find the position function r(t) for this projectile.

• A) \(\mathbf { r } ( \mathrm { t } ) = ( 175 \mathrm { t } \sin \alpha ) \mathbf { i } + \left( 175 \mathrm { t } \cos \alpha - 16 \mathrm { t } ^ { 2 } \right) \mathbf { j }\)
• B) \(\mathbf { r } ( \mathrm { t } ) = ( 175 \mathrm { t } \cos \alpha ) \mathbf { i } + \left( 175 \mathrm { t } \sin \alpha - 16 \mathrm { t } ^ { 2 } \right) \mathbf { j }\)
• C) \(\mathbf { r } ( \mathrm { t } ) = \left( 175 \mathrm { t } \sin \alpha - 16 \mathrm { t } ^ { 2 } \right) \mathbf { i } + ( 175 \mathrm { t } \cos \alpha ) \mathbf { j }\)
• D) \(\mathbf { r } ( \mathrm { t } ) = \left( 175 \mathrm { t } \cos \alpha - 32 \mathrm { t } ^ { 2 } \right) \mathbf { i } + ( 175 \mathrm { t } \sin \alpha ) \mathbf { j }\)

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Definitions:

Biological Perspective

An approach in psychology focused on understanding behavior and mental processes through biological processes, including genetics, biochemistry, and anatomy.

Threatening Situations

Circumstances or events that pose a danger or harm, inducing a response of fear or anxiety.

Social Encounter

An interaction between two or more individuals in a social context, which can influence thoughts, feelings, and behaviors.

Impersonal Events

Situations or occurrences that do not involve personal interactions or relationships and are usually regarded in an objective or detached manner.