Grades 3-4 Video Solutions 2021-video 2021 3-4/12

Video Transcription

Video Summary

Five balls move simultaneously, with different values and directions. Upon collision, larger balls absorb smaller ones, combining their values and continuing in their original direction. Initially, the 9 collides with a 3, resulting in a 12 moving right. It then absorbs a 7, becoming 19, still moving right. The 19 then collides with a 20, leading to a 39, now moving left. Finally, the 39 absorbs a 10, resulting in a 49 moving left. The final result is a ball with a value of 49 going to the left, which corresponds to answer C.

Keywords

collision

absorption

ball values

direction change

final result