A Spring-Powered Dart Gun Is Unstretched and Has a Spring

question 58

Multiple Choice

A spring-powered dart gun is unstretched and has a spring constant 16.0 N/m. The spring is compressed by 8.0 cm and a 5.0 gram projectile is placed in the gun. The kinetic energy of the projectile when it is shot from the gun is

• A) 0.125 J.
• B) 0.090 J.
• C) 0.075 J.
• D) 0.051 J.
• E) 0.030 J.

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