An object takes 5 seconds to travel 25 meters. What is its speed?

Is it possible to use the energy from two atoms colliding to create a clean burning lasting fuel source with a large amount of force? is it also possible to harness that energy from the two atoms colliding to create a clean energy source that will last for years from just two atoms colliding. is there a possibility to control and store that energy for years but slowly let the energy out enough to power cities cheaper and faster.

If steel is more dense that lake water, why can a boat float

Argon, neon, and xenon are examples of