The speed of cherry blossoms falling is five centimeters per second. What speed should I use to meet you.
The speed of raindrops falling is ten meters per second. What speed should I use to keep you here?
The meteorite falls at a speed of ten kilometers per second. What speed should I use to save you?
Fireworks dissipate at a speed of 300 million meters per second. What speed should I use to chase you back?