A Light Is on the Ground $70.0 \mathrm{~m}$ Away from a Wall

Short Answer

A light is on the ground $70.0 \mathrm{~m}$ away from a wall. At what rate will a $1.80-\mathrm{m}$ tall person's shadow be increasing when the person is $20.0 \mathrm{~m}$ from wall and walking away from the wall at $5.00 \mathrm{~m} / \mathrm{s}$ .