A race car traveling at 180 mph has a projected forward area of 40 ft2. The car has a drag coefficient of0.25. Assuming the air temperature is 25oC and the car is very near sea level, what is the. drag force onthe car. ( usinng the drag rules and princples )

A light bar AD is suspended from a cable BE and supports a 30-kg block at C. The ends A and D of the bar are in contact with frictionless vertical walls. Determine the reaction at D in N. a =196 mm, b =110 mm, c =80 mm and d = 160 mm

Average headway of 8 seconds, density is 65 vechicles per hour. Calculate the space mean speed at a particular location?

can u rank one avoirdous pound, one troy pound, one troy ounce, and one avoirdupois from lightest to heaviest unit

A bull shark has a reduced weight (or “submerged weight” = W - B) of 4Nin seawater and 12N in freshwater, i.e., as found in rivers (bull sharks have been known to swim into rivers from the ocean – including the Mississippi river!). How much more lift force needs to be generated when transitioning from sea to freshwater? Assuming that CL stays the same, calculate how much faster the shark has to go in order to swim horizontally in freshwater (i.e., relative to the swim speed in saltwater)?