A 30-Kg Particle Has a Position Vector Given By By \overrightarrow{\mathbf{r}}=\left(2.0

question 41

Multiple Choice

A 3.0-kg particle has a position vector given by $\overrightarrow{\mathbf{r}}=\left(2.0 t^{2} \hat{\mathbf{i}}+3.0 \hat{\mathbf{j}}\right)$ where $\overrightarrow{\mathbf{r}}$ is in metres and t is in seconds. What is the angular momentum of the particle, in kg.m²/s, about the origin at t = 2 s?

• A)72
• B)(-72 )
• C)24
• D)(-24 )
• E)22

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Definitions:

Externality

Action by either a producer or a consumer which affects other producers or consumers, but is not accounted for in the market price.

Weed Control

The process or methods used to prevent or reduce unwanted plant (weed) growth that competes with desired plants in agricultural or horticultural operations.

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Total Cost

The complete financial outlay associated with the production or offering of goods and services, inclusive of both fixed and variable components.