An argon atom with a mass of 6.63X10^-26 kg travels at 17 m/s, right and strikes another identical argon atom dead centre travelling at 20 m/s, left. The first atom rebounds at 20 m/s, left while the second atom moves at 17 m/s, right. Determine if the collision is elastic. 

please use this google drive link to download the answer file.

https://drive.google.com/file/d/1fZ4Q97jFWEt50ODa2Y2E7_SL9TwFtqBf/view?usp=sharing

note: if you have any trouble in viewing/downloading the answer from the given link, please use this below guide to understand the whole process.

https://helpinhomework.org/blog/how-to-obtain-answer-through-google-drive-link