In a volleyball game, a player on one team spikes the ball over the net when the ball is 8 feet above the court. the spike drives the ball downward with an initial vertical velocity of 30 feet per second. how much time does the opposing team have to return the ball before it touches the court?

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Need to finish my juan wants to build a greenhouse in his back yard. he needs to maximize the ratio of floor area to structure volume in order to provide the most room for plants while minimizing the area to be heated. find the description of the structure that best meets juan’s criteria. a.) a hemisphere with a diameter of 12 feet b.) a cube with a side length of 12 feet c.) a cone with a diameter of 12 feet and a height of 10 feet d.) a square pyramid with a base side length of 12 feet and a height of 9 feet