Question

Explain me what is velocity of sound and also give me the define of velocity and what is difference between velocity and speed

Answer 1

The speed of sound is the distance travelled per unit time by a sound wave as it propagates through an elastic medium. ... At 20 °C (68 °F), the speed of sound is 343 metres per second (1,125 ft/s; 1,235 km/h; 767 mph; 667 kn), or a kilometre in 2.91 s or a mile in 4.69 s.


Differences Between Speed and Velocity

S.No.	SPEED	VELOCITY
1.	It is defined as the rate of change of distance.	It is defined as the rate of change of displacement.
2.	It is a scalar quantity.	It is a vector quantity.
3.	It can never be negative or zero.	It can be negative,zero or posituve.
4.	Speed is velocity without direction.	Velocity is directed speed.
5.	Speed may or may not be equal to velocity.	A body may possess different velocities but the same speed.
6.	Speed never decreases with time. For a moving body, it is never zero.	Velocity can decrease with time. For a moving body , it can be zero.
7.	Speed in SI is measured in ms-1	Velocity in SI, is measured in ms-1