A car has a thinking distance of 6 m and a braking distance of 8 m. Its speed is doubled. The reaction time and braking force remain constant. What is its new stopping distance?
28 m28\ \mathrm{m}28 m
38 m38\ \mathrm{m}38 m
56 m56\ \mathrm{m}56 m
44 m44\ \mathrm{m}44 m