How far will a car travel when accelerating to 30 mph?

Answer 1

It depends on the rate of acceleration.

A top fuel dragster can accelerate at 160 ft/s2. That means it can hit 30 mph (44 ft/s) in about 0.3 seconds. From a standing start, assuming constant acceleration, it will have traveled only about 20 feet.

Your mileage may vary.