Petra finds a marking in the wall at a crime scene. She believes it may have been caused by a knife. What are the procedures for handling such evidence?

First, Petra photographs and measures the mark, then makes a - (casting, lifting, scraping) of the hole. Then she collects all the knifes in the area for comparison. She packages each of these in an immovable - ( cardboard, plastic, glass) casing with a warning label that a sharp object is enclosed.

question: ray weighs 100 kilograms, his wrestling partner, bobby, weighs 50 kilograms. if ray moves at 4 m s , how fast will bobby have to run at him to apply an equal amount of kinetic energy?

answer: 8 m/s he needs to run twice as fast to keep up so he has some work to do

explanation:   if the mass has units of kilograms and the velocity of meters per second, the kinetic energy has units of kilograms-meters squared per second squared.

question answered by

(jacemorris04)

it's c (engineer's do their work with mechanical stuff not on any living being)