Two Billiard Balls Have Velocities of 2

question 69

Multiple Choice

Two billiard balls have velocities of 2.0 m/s and -1.0 m/s when they meet in an elastic head-on collision.What is the final velocity of the first ball after collision?

• A)-2.0 m/s
• B)-1.0 m/s
• C)-0.5 m/s
• D)+1.0 m/s

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Definitions:

No-voltage Drop-out

A feature in electrical control circuits that causes the device to trip or shut off when the supply voltage falls below a certain level, enhancing safety.

Low-voltage Drop-out

A protective feature in electrical devices that causes them to turn off when voltage levels fall below a specified threshold.

Motor Stator

The motor stator is the stationary part of an electric motor, consisting of coils which create a magnetic field that induces rotation in the motor's rotor.

Selector Switch

A switch that allows the user to select between multiple options or circuits within an electrical or electronic device.