The object is balanced against standard units of mass
The average distance is 16,000 km
Converging rate is 10 cm/year
1 km = 100,000 cm
= 16,000 × 100,000/10 cm/year
= 160,000,000 years
It will then take 160 Million years to collide.
It's also known as ulnar drift.
I take this class so the answer is A single stranded dna molecule serves as a template