A Mass of 1

question 26

Multiple Choice

A mass of 1.35 kg rests on a frictionless floor and is attached to a wall with a 25.0-cm long spring with spring constant 1250 N/m.The mass is pulled back away from the wall to stretch the spring to a length of 34.5 cm.The mass is then released.The speed of the block when the spring returns to its original (unstretched) length is

• A)10.5 m/s.
• B)87.8 m/s.
• C)2.89 m/s.
• D)1.32 m/s.
• E)25.6 m/s.

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Definitions:

Diazepam

A medication belonging to the benzodiazepine class, commonly used to treat anxiety, seizures, muscle spasms, and alcohol withdrawal.

Contractility

The capability of muscular or other tissue to contract or shorten, causing movement or the exertion of force.

Extensibility

The capability of being stretched or extended.

Excitability

The ability of a cell or organism to respond to environmental stimuli by changing its bioelectric state.