The Position of a Particle Moving Along the Y Axis

question 8

Multiple Choice

The position of a particle moving along the y axis has a position given by $y = 0.20 \mathrm {~m} + \left( 8.0 \frac { \mathrm { m } } { \mathrm { s } } \right) t - \left( 10 \frac { \mathrm { m } } { \mathrm { s } ^ { 2 } } \right) t ^ { 2 }$ Is there any time interval during which the particle is not moving?

• A)Yes,from 0.60 s to 1.00 s.
• B)Yes,from 0.795 s to 0.805 s.
• C)Yes,at the time t = 0.80 s.
• D)No,the velocity is never zero.
• E)No,an instant is not the same as a time interval.

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Definitions:

Horizontal (X) Axis

The line on a graph that runs horizontally, often used to represent the independent variable in data presentations.

Incremental Revenues

Additional revenue generated from new sales activities or strategies, beyond existing income streams.

Incremental Costs

Additional costs that a company incurs when increasing its production or activities over a certain threshold.

SBU

Strategic Business Unit; a semi-autonomous unit within a firm that focuses on a specific market segment or product line.