📅 NSB 2017🎓 HS🔄 Round 7#️⃣ Q23🌟 BONUS✍️ Short Answer
A 50-kilogram superhero is standing on a frictionless surface. He fires a 100-gram arrow horizontally at a speed of 200 meters per second at a target. In meters per second, what is his speed afterwards?
✔️Answer:0.4
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