The Site from Which an Airplane Takes Off Is the Origin

question 19

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: $\overrightarrow{\mathbf{r}}=\left(1.61 \times 10^{6} \tilde{\mathbf{i}}+3.00 \times 10^{3} \hat{\mathbf{j}}\right) \mathrm{m}$ and $\overrightarrow{\mathbf{v}}=(150 \hat{\mathbf{i}}+21 \hat{\mathbf{j}}) \frac{\mathrm{m}}{\mathrm{~s}}$ .The plane is most likely:

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

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Definitions:

Laboratory Observation

A research method involving the detailed study of behavior in a controlled setting, allowing for precise measurement and control of variables.

Naturalistic Observation

A research method in which subjects are observed in their natural environment without any manipulation by the researcher.

Inferential Statistical Analyses

A branch of statistics that allows researchers to make predictions or inferences about a population based on a sample of data.

Scientific Observation

The active acquisition of information from a primary source, using standardized methods to gather empirical evidence in a scientific context.