A Bicycle's Wheels Are Moving at a Speed of 0

question 131

Multiple Choice

A bicycle's wheels are moving at a speed of 0.78 revolutions per second. The cyclist sees a log in the road and brakes, slowing the bicycle to 0.05 revolutions per second over 4 seconds. What is the angular acceleration of the bicycle wheel?

• A)0.18 rev/s²
• B)-0.18 rev/s²
• C)2.9 rev/s²
• D)-2.9 rev/s²

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Definitions:

Hand-off-automatic Circuit

A control circuit allowing equipment operation in hand (manual control), off, or automatic modes, depending on the selected setting.

Operator

An operator is a person or device responsible for managing, controlling, or executing the operation of machines, systems, or processes.

Pilot Device

An interface component used to control and monitor the operation of machinery or equipment, often initiating the start or stop commands.

Control Coil

The coil in a relay or contactor that, when energized, creates a magnetic field to pull in contacts, controlling circuit continuity.