Usain Bolt requires five seconds to step after he runs the 100 meter dash . When he wins the race he's running at 10 meters per second . What is his declaration? Please answer as soon as possible!

Which statements identify what astronomers currently know and think will happen with our universe? check all that apply. the big bang produced dark energy, which accounts for some of the energy needed to expand the universe. the vastness of space may contain a type of matter known as "dark matter." the universe is currently shrinking at a rapid rate. the universe is currently expanding at an accelerating rate. the big bang theory explains all the energy and matter discovered by scientists.