A 42-Kg Object, Initially at Rest, "Explodes" into Three Objects of of Equal

question 19

Multiple Choice

A 4.2-kg object, initially at rest, "explodes" into three objects of equal mass. Two of these are determined to have velocities of equal magnitudes (5.0 m/s) with directions that differ by 90°. How much kinetic energy was released in the explosion?

• A) 70 J
• B) 53 J
• C) 60 J
• D) 64 J
• E) 35 J

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Definitions:

Bias

A tendency to favor or lean towards one side, idea, or group, often in a way that is considered to be unfair.

Critical Thinking Disposition

An inclination or attitude towards engaging in thought processes that involve analyzing, evaluating, and synthesizing information.

Self-Rating Form

A type of assessment tool in which individuals evaluate their own abilities, behaviors, or characteristics.

Overall Attitude

The general or prevailing mood, disposition, or inclination toward something or someone.