📅 MIT Science Bowl 2021🎓 HS🔄 Round 5#️⃣ Question 21🌟 BONUS✍️ Short Answer
A particle of mass m moving to the right at speed v collides with a particle of mass m moving to the left at speed v. The two particles fuse into a single stationary particle of mass 3m. In terms of the speed of light c, what is v?
✔️Answer:(√5/3)c
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