An equation has an "equals" sign, which is (very roughly) approximately like a verb in a sentence. But "so fast for so long" doesn't have a verb. If the statement had been "so fast for so long is what distance?", then you could have formed an equation. But I don't believe you can, from what you've posted. Sorry.grimgurl said:Can you people help me with this equation please: An athlete runs at a rate of 8 feet per second for 5 seconds.