Starting from a stationary position, Rahul paddles his bicycle to attain a velocity of6m/sin30s. Then he applies brakes such that the velocity of the bicycle cones down to4m/sin the next5s. Calculate the acceleration of the bicycle in both the cases.

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.

compass can be used day and night, cloudy or sunny

what is the actual question though?