Answer:
The definition of parallel lines are lines that have a constant minimum distance between them at any given point along the lines, such that the lines are the same distance apart all through
Therefore, given that we have;
1) The path of the two bottle rockets are parallel,
2) The initial distance between the two rocket on level ground = 5 feet = The perpendicular (shortest) distance between the two rockets
3) The shortest distance between the rockets having the same height moving on parallel path will be constant = 5 feet
4) The height of the two rockets after 0.1 second = Constant = 5 feet
5) Therefore, by the definition of parallel lines, distance between the two rockets which are at the same height after 0.1 second will still be 5 feet
Step-by-step explanation: