A 60-Kg Object, Initially at Rest in Free Space, "Explodes" into into Three

question 74

Multiple Choice

A 6.0-kg object, initially at rest in free space, "explodes" into three segments of equal mass. Two of these segments are observed to be moving with equal speeds of 20 m/s with an angle of 60° between their directions of motion. How much kinetic energy is released in this explosion?

• A) 2.4 kJ
• B) 2.9 kJ
• C) 2.0 kJ
• D) 3.4 kJ
• E) 1.2 kJ

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Definitions:

Parvocellular Cells

Small-bodied neurons located in the parvocellular layer of the thalamus, involved in processing of fine visual details and color.

Visual Cortex

The part of the cerebral cortex of the brain that processes visual information.

Photosensitive

Having a sensitivity to light, causing a chemical, physical, or biological response when exposed to it.

Retinal Ganglion Cells

Neurons in the retina that receive visual information from photoreceptors via bipolar cells and transmit it to the brain.