You drive 10 meters backwards and then 20 more meters backwards in 30 seconds. What is your average velocity?

Average velocity= 1 m/s

Explanation:

Step one:

given data

total distance covered =  10 meters backwards+  20 more meters backwards

toatal distance= 10+20= 30 meters

time taken = 20 seconds

Required

The average velocity

Step two:

the expression for the average velocity is

Average velocity= total distance/total time taken

Average velocity= 30/30

Average velocity= 1 m/s

15.3 cos 65 degrees trig

there is no correct list among the choices you've provided.

the list might look something like this:

-- baby human

-- piccolo

-- flute

-- soprano singer

-- trumpet

-- tenor singer

-- trombone

-- baritone singer

-- baritone horn

-- bass singer

-- tuba

since i had to make up the list myself, i made it easy on myself, and i didn't try to shuffle the string instruments and woodwinds into it too.