A policeman investigating an accident measures the skid marks left by a car on the horizontal road. He determines that the distance between the point that the driver slammed on the brakes (thereby locking the wheels) and the point where the car came to a stop was 28.0 m. From a reference manual he determines that the coefficient of kinetic friction between the tires and the road under the prevailing conditions was 0.300. How fast was the car going when the driver applied the brakes

The car was 12.8m/s fast when the driver applied the brakes.

Explanation:

The equations of motion of the car in the horizontal and vertical axes are:

Since the kinetic friction is defined as and we have:

Next, from the kinematics equation of speed in terms of distance, we have:

Since the car came to a stop, the final velocity is zero, and we get:

Finally, plugging in the known values, we obtain:

It means that the car was 12.8m/s fast when the driver applied the brakes.

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.

no

sodium is solid at rt