Sound travels in air at an average speed of nearly
A ) 1275 miles per hour
B ) 755 Mile per hour
C ) 332 miles per hour
D ) 760 miles per hour ✅
Explanation:
The speed of sound is the distance travelled per unit of time by a sound wave as it propagates through an elastic medium. At 20 °C (68 °F), the speed of sound in air is about 343 metres per second (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or one kilometre in 2.91 s or one mile in 4.69 s.