Average speed = total distance / total time.
That's 172 km / 5 hr = 34.4 km//hr
Answer:
B.
Velocity describes how fast something is going, whereas Speed describes how fast something is going and in which direction.
Explanation:
. If the above statement is true, then describe an example of such a motion. ... b. What was the displacement for the entire trip? 0 miles (You finish where you started) ... Speed is a quantity that describes how fast or how slow an object is moving.
Answer : The correct option is, (A) 
Explanation :
The formula used for speed of sound wave is:

where,
v = speed of sound wave = 
= density of medium = 
B = bulk modulus = ?
As the formula is,

Squaring on both the sides, we get:

Now put all the given values in the above formula, we get:


Therefore, the bulk modulus of the medium is 
Because it shows a specific type of flow and arrows that show the portion of the flow hope this helps or u can just google it :P