On a topographic map, six contour lines span a horizontal map distance of 0.5 inches. the horizontal scale is 1 inch equals 2,000 ft. how far apart are the first and sixth lines?

1000 ft

Explanation:

There are six lines which has a total length of 0.5 inches on the map. This is known as the scale of a map.

On the map we have

So, the distance between first and sixth line is 0.5 inch

The distance is 1000 ft on the map

answer; how far out of place which the object finished relative to the starting location;

it's when something is going so fast it makes a loud noise, breaking the sound barrier, for example: a jet makes a loud noise, not only cause of the jet but because they reached a point where they went so fast that you can year the noise from various parts, kinda like a police car, lets say the car was going   so fast that you hear the siren of the cop car right next to you, but the car is probably a mile a way, it's cos the siren was next to you a few seconds if you understand me