Achild bounces a 51 g superball on the sidewalk. the velocity change of the super bowl is from 22 m/s downward to 14 m/s upward. if the contact time with the sidewalk is 1 800 s, what is the magnitude of the average force exerted on the superball by the sidewalk?

Explanation:

From the exercise we know:

So, the average acceleration is:

The average force is:

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.

explanation:

wheres the pic