(a) write down the bernoulli's equation and continuity equation for a pipe flow and define each term in the equation. (b) the closed tank of a fire engine is partly filled with water, the air space above being under pressure. a 6 cm bore connected to the tank discharges on the roof of a building 2.5 m above the level of water in the tank. the friction losses are of 45 cm of water. determine the air pressure which must be maintained in the tank to deliver 20 litres/sec on the roof.

It should be d if not then c

Answertraveling around a circular trackexplanation"traveling around a circular track" is the best answer as you could be traveling around a circular track at a constant speed. your velocity would therefore have the same magnitude but will always be constantly direction. since acceleration is the rate of change of velocity, the rate of change will only involve the direction of velocity and not the magnitude.wrong choices: "an object at rest" does not accelerate at all"increasing speed while traveling around a curve" means that the acceleration will not be constant due to only change in direction; it will be constant due to both magnitude and direction"an object in free fall" does not necessarily change direction