Grades 3-4 Video Solutions 2022-2022_3-4

Video Transcription

Problem number 2. Laser beams reflect in the mirrors in the way shown in the first picture. At which letter will the laser beam in the second picture end? A, B, C, D, or E.  The laser will always beam at a 90 degree angle because of the way the mirrors are tilted. It comes in here, then it will go down, and then to the right.  It will then proceed to go up, and right again. It will now go down, it will now go left, and down. Which means it will be at B. Which means our answer is B.

Video Summary

Problem number 2. Laser beams reflect in the mirrors in the way shown in the first picture. At which letter will the laser beam in the second picture end? A, B, C, D, or E. The laser will always beam at a 90 degree angle because of the way the mirrors are tilted. It comes in here, then it will go down, and then to the right. It will then proceed to go up, and right again. It will now go down, it will now go left, and down. Which means it will be at B. Which means our answer is B.

Keywords

laser beams

mirrors

reflection

90 degree angle

path tracing