The Site from Which an Airplane Takes Off Is the Origin.The

question 18

Multiple Choice

The site from which an airplane takes off is the origin.The x axis points east;the y axis points straight up.The position and velocity vectors of the plane at a later time are given by $\overrightarrow { \mathbf { r } } = \left( 1.61 \times 10 ^ { 6 } \tilde { \mathbf { i } } + 9.14 \times 10 ^ { 3 } \tilde { \mathbf { j } } \right) \mathrm { m }$ and $\overrightarrow { \mathbf { v } } = + 224 \hat { \mathbf { i } } \frac { \mathrm { m } } { \mathrm { s } }$ . The plane is most likely

• A)just touching down.
• B)in level flight in the air.
• C)ascending.
• D)descending.
• E)taking off.

---

Definitions:

Shock Phase

The second stage of the general adaptation syndrome described by Selye.

Alarm Reaction

The initial stage in the stress response in which the body reacts to a stressor with a fight-or-flight response.

Mildly Anxious

Experiencing a low level of anxiety, characterized by slight nervousness or apprehension about a specific situation or task.

Anxiety

A feeling of worry, nervousness, or unease about something with an uncertain outcome.