It is an example of liquid. if thats what you are asking for...
Will this one work?...................
Answer:

Explanation:
First of all, let's convert from nanometres to metres, keeping in mind that

So we have:

Now we can convert from metres to centimetres, keeping in mind that

So, we find:

Answer:
smaller one
Explanation:
even though he is moving quicker doesn't mean he will be packing more force in the collision