The Coordinate of an Object Is Given as a Function

question 73

Multiple Choice

The coordinate of an object is given as a function of time by x = 7t - 3t², where x is in meters and t is in seconds.Its velocity at t = 3s is:

• A)-6 m/s
• B)-11 m/s
• C)-21 m/s
• D)9 m/s
• E)18 m/s

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Definitions:

Wet Cell

A type of battery containing a liquid electrolyte solution, commonly used in automotive and other applications.

Lead Acid

A type of rechargeable battery technology using lead electrodes and sulfuric acid electrolyte, commonly used in vehicles and backup power systems.

Excessive Vibration

An undesirable level of oscillations or movements in machinery or structures, which can cause damage or failure over time.

Active Material

Substances within a battery or electrochemical cell that directly participate in the electrochemical reactions during charge and discharge.