The Position of an Object as a Function of Time

question 1

Multiple Choice

The position of an object as a function of time is given by x = bt² - ct,where b = 2.0 m/s² and c = 6.7 m/s and x and t are in SI units.What is the instantaneous velocity of the object when t = 2.2?

• A) 1.7 m/s
• B) 2.1 m/s
• C) 2.3 m/s
• D) 2.7 m/s

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Definitions:

Batteries

Electrochemical cells that store energy and release it in the form of electricity, used as a power source in many electronic devices and vehicles.

SAE Relay

A relay standardized by the Society of Automotive Engineers, designed for automotive electrical applications.

Control Circuit

Used in reference to both cranking systems and air brake systems. In a cranking system, it is the low-current switching circuit that connects the ignition switch with the magnetic switch. In an air brake system, it defines low-volume pilot air signals that are used to activate high-volume slave circuits.

Terminals

Terminals refer to the points at which electrical connections are made to a circuit, device, or a battery, facilitating the transfer of electrical power or signals.