Question: A uniform solid disk of mass 4 . 2 kg rolls down a hill without slipping, dropping through a vertical distance of 6 9 m

A uniform solid disk of mass

4.2

kg rolls down a hill without slipping, dropping through a vertical distance of

69

.

The disk has an initial speed of

14 \frac{m}{s}

and a final speed of

24 \frac{m}{s} .

Throughout the process, only normal force, gravity, static friction, and air resistance act on the disk. What is the work done by the air resistance in kJ

?

Enter only the numerical value, rounded to the nearest first decimal place. Do not enter any units.

A uniform solid disk of mass 4 . 2 kg rolls down

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