Note that , and by the chain rule, . Note that the set of possible velocity vectors forms a vector space. If and are two paths through the origin, then so is and the velocity vector of this path is . Similarly, if is a scalar, then the path has velocity vector . It makes sense to distinguish the velocity vectors at different points. In physics, the set of all velocity vectors gives all possible combinations of position and momentum, and is called phase space.
Often ribs are boiled or oven-steamed before grilling to help tenderize the meat. To oven-steam ribs, place ribs in a large baking pan, fill with about 1 inch of water, cover with aluminum foil and bake for about 50 minutes in a 350-degree oven. The recipe here includes instructions on how to boil ribs before grilling.
How to Cook Beef Ribs on a Grill Using the Low and Slow Method. Start your grill about 30 minutes prior to cooking. Prepare the grill for indirect grilling. Stabilize the temperature at 225 to 235-degrees F. Place ribs bone side down on the grill grate, away from the fire. If cooking several racks of ribs, use a rib rack and place the meat side of the ribs facing the fire.