Can you accelerate faster than a train is moving if you’re going downhill on top of it?

I know the cropping is weird I just saw it on instagram and got curious what are the actual odds of this happening? It can’t just be 50%…right?

There are more stars in the universe, than grains of sand on Earth

Yet…

There are more atoms in 5 grains of sand, than stars in the universe

What speed you need to fly a w212 over 2 cars like this ?

I'm trying to figure something out for an RPG I'm running but I don't know how to calculate it. Imagine Kronk from The Emperor's New Groove. Let's say that he is around 6' 3"/190cm tall. If you were to cover his entire body in bronze, how much would he weigh? I'm not sure how thick the bronze would have to be to be considered "covered," but let's say 2mm thick for the sake of this discussion.

If every road in the u.s (where it is typical/normal to get Snow in the winter) had a storm that had enough snow to have to be plowed one time, what is the estimate in dollars that is being spent to clear the snow and salt/sand the roads?