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gizmo_the_mogwai [7]

3 years ago

9

Two samples of dirt are collected from a suspect's tread in his shoe and a crime scene. She notes very similar characteristics.

Which of these would be the LEAST important piece of information needed to link the suspect to the crime?

1 answer:

elena-14-01-66 [18.8K]3 years ago

8 0

brainly.com/question/11542618?answering=true&answeringSource=greatJob%2FquestionPage

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Three kids are riding on a snow sled traveling horizontally without friction at 19.8 m/s. The masses of Kid A, B, and C are 42.8

Kamila [148]

Answer:

34.6 m/s

Explanation:

From conservation of momentum, the sum of initial and final momentum are equal. Momentum is a product of mass and velocity. Initial mass will be 42.8+31.5+25.9=100.2 kg

Final mass will be 31.5+25.9=57.4 kg

From formula of momentum

M1v1=m2v2

Making v2 the subject of the formula then

$V2=\frac {M1v1}{m2}$

Substitute 100.2 kg for M1, 19.8 m/s fkr v1 and 57.4 kg for m2 then

$V2=\frac {100.2 kg\times 19.8 m/s}{57.4 kg}=34.56376 m/s\approx 34.6 m/s$

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