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) \(\mathbf { r } ( \mathrm { t } ) = \left( 175 \mathrm { t } \cos \alpha - 32 \mathrm { t } ^ { 2 } \right) \mathbf { i } + ( 175 \mathrm { t } \sin \alpha ) \mathbf { j }\)

---

Definitions:

Professional Advice

Guidance or recommendations on specific matters, given by someone who is an expert in a particular field.

Financial Situation

An individual's or organization's condition regarding their monetary assets, liabilities, income, and expenses, which can influence their ability to secure loans, make investments, or manage daily operations.

Budget

A financial plan for a defined period, often a year, that allocates future personal income towards expenses, savings, and debt repayment.

Academic Advisor

A staff member at an educational institution who helps students plan their academic careers by offering advice on courses, programs, and other educational matters.