M Mr. Dubey 🎓 Coach ⭐ 103.24K Points 📊 Physics Q. Mach number is used in connection with the speed of (A) sound (B) aircraft (C) spacecraft (D) ships 👁️ Show Answer 🔗 Share ⚡Menu ✅ Correct Answer: (B) aircraft You must be Logged in to update hint/solution 💬 Discussion 💬 Comment