Angular Impact Produced by Horizontal Motion
Angular Impact Produced by Horizontal Motion
You will be using the same materials as in Week 2 Discussion Assignment.
The objective of this experiment is to analyze the effect of the horizontal motion of blood applied to falling blood drops and correlate it to the resultant angular impact of bloodstain patterns and to determine the direction of travel of the source of the blood. The edge characteristics of bloodstains, degree of low level spattering of blood, and wave cast-off bloodstains origination from the parent drop will be studied.
Equipment Required:
A few drops of synthetic blood
Glass pipette or dropper
Paper
Stopwatch
Tissue
Digital Camera/Cell phone will work
USB Microscope/Magnifying glass will work
Procedure:
Lay out the paper on a table for a distance of six feet.
Draw synthetic blood into the pipette and wipe off the excess blood on the outside of the tip of the pipette.
Squeeze the initial drop onto tissue to remove any air bubbles.
Hold the pipette four inches above the target surface, walk at a normal constant pace the distance of six feet, allowing blood drops to fall on the target surface.
Measure with a stopwatch the number of seconds it takes for you or another person to travel the distance of six feet. The movement of the person should begin several feet in front of the table and terminate beyond the table to achieve the measurement of a uniform speed.
Repeat the experiment with the person walking at a fast pace and at a running pace with the blood falling from the pipette four inches above the target surface.
Repeat the experiment with the paper on the floor and the pipette of blood held 36 inches above the target surface using a timed, normal, constant walk, fast walk, and a run.
Download the template for recording your observations on this assignment.
Assignment Template
Submission Details:
For this assignment, make sure you post your initial response to the Discussion Area by the due date assigned.
To support your work, use your course and text readings and also use outside sources. As in all assignments, cite your sources in your work and provide references for the citations in APA format.
Start reviewing and responding to the postings of your classmates as early in the week as possible. Respond to at least two of your classmates. Participate in the discussion by asking a question, providing a statement of clarification, providing a point of view with a rationale, challenging an aspect of the discussion, or indicating a relationship between two or more lines of reasoning in the discussion. Complete your participation for this assignment by the end of the
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