Final answer:
The attachment refers incorrectly to a physics scenario involving pucks, which does not apply to the roller derby question about a White Jammer staying within bounds.
Step-by-step explanation:
The scenario described involves a Red Pivot blocking a White Jammer in a way that affects the White Jammer's path on a track. It seems that you are describing an event occurring in roller derby, using terms like 'pivot', 'jammer', and 'bounds'. However, the reference information provided mistakenly talks about a collision between two pucks in what seems like a physics context, perhaps discussing momentum or conservation of kinetic energy. This is an error, as it is unrelated to the roller derby scenario. If you need assistance in understanding the rules and penalties related to roller derby such as blocking, staying within bounds, and the consequences of entering and exiting the track improperly, please provide the correct context, and I will be glad to explain those to you.