$\text { Find the velocity vector in terms of } u _ { r } \text { and } u _ { \theta } \text {. }$

question 73

Multiple Choice

$\text { Find the velocity vector in terms of } u _ { r } \text { and } u _ { \theta } \text {. }$
- $r = 2 \cos 2 t$ and $\theta = 4 t$

• A) \(\mathbf { v } = ( - 8 \sin 4 \mathrm { t } ) \mathbf { u } _ { \mathrm { r } } + 4 \cos 4 \mathrm { tu } _ { \theta }\)
• B) \(\mathbf { v } = ( 4 \sin 2 \mathrm { t } ) \mathbf { u } _ { \mathrm { r } } + 8 \cos 2 \mathrm { tu } _ { \theta }\)
• C) \(\mathbf { v } = ( - 4 \sin 2 \mathrm { t } ) \mathrm { u } _ { \mathrm { r } } + 8 \cos 2 \mathrm { tu } _ { \theta }\)
• D) \(v = ( - 2 \sin 2 t ) u _ { r } + 8 \cos 2 t u _ { \theta }\)

Comprehend the internal rate of return (IRR) and its role in evaluating investment opportunities.

Understand the payback and discounted payback methods and their limitations.

Recognize the concept of profitability index and its relation to NPV.

Apply the concept of average accounting return (AAR) and its significance in project evaluation.

---

Definitions:

Low Self-Esteem

A condition in which a person holds a poor or negative perception of themselves, often leading to feeling unworthy or incapable.

Emotional Support

Assistance provided through empathy, concern, and love to help individuals cope with stress or hardship.

Coping

The ability to effectively deal with something difficult, such as stress or adversity.

Self-Esteem

A person's personal assessment of their self-esteem.