By What Fraction Does Your Mass Increase When You and Your

Multiple Choice

By what fraction does your mass increase when you and your car travel down the highway at 70 mph? Assume that the total mass of your car and occupant is 2000 kg.

A) 5.38 $\times$ 10^-15
B) 1.08 $\times$ 10 ^-11
C) 3.23 $\times$ 10^-6
D) 9.68 $\times$ 10⁵
E) None of these is correct.