Yes, if a team moves one object and calls a stop by saying "science", based upon rule 6.c., it is not a violation of the rules nor is it a Spirit of the Rules violation.
There are no restrictions on which brand kit you use for robo-cross as long as all the rule requirements are met, particularly section 2 Construction Requirements. We cannot rule ahead of time whether your implementation of a particular kit or brand meets the requirements.
The 2X bonus applies to ALL items of a given type if at least one item of that type is in each jug. Example, one ping pong ball in jug 1, one in jug 2 and two on the playfield in any zone. All four get the 2X bonus. Note, if a ball is in zone A or B two times zero is still zero of course.
No it doesn't have to stay in contact with the course, but if it flies it must do so in a safe manner.
The pennies will be loosely stacked and separate.
456, no time points, no robot points, no penalties. All objects (pennies, legos, ping pong balls, tennis ball) in their maximum scoring position.
Zone D. The score assigned to the Objects (6.b.i-iii) only depends on which zone the Object is in.