Suppose that several projectiles are fired upward. Which one will be in the air longest? (R is range, h is highest elevation, and t is time of flight.) The one with the minimum elevation, h The one with the farthest range, R The one with the highest maximum elevation, h The one for which the product of (R)(t)(h) is maximum The one with the greatest initial velocity

Suppose that several projectiles are fired upward. Which one will be in the air longest? (R is range, h is highest elevation, and t is time of flight.) The one with the minimum elevation, h The one with the farthest range, R The one with the highest maximum elevation, h The one for which the product of (R)(t)(h) is maximum The one with the greatest initial velocity