If you're traveling at 70 mph, your car is moving at _____ per second.
(A) 70 feet - 7 car lengths
(B) 140 feet - the width of a freeway
(C) 35 feet - the length of a semi truck
(D) 105 feet - a third of the distance of a football field
(E) 100 yds - the distance of a football fiel