An aircraft has a net excess thrust of 14,000 lbs and weighs 36,000 lbs. if it starts from 30 kts, what is its velocity (in knots) after 15 seconds?

"(witch the answer is 141.218) you need this for the net part"

how many feet down the runway would the aircraft in problem 4 be at rotation if vr = 160 kts? (the aircraft is at 135 feet down the runway when it starts its takeoff and starts from 30kts)

where is the circuit diagram ?

no simpler subs form complex ones. synthesise = make

the duration of a photographic flash is related to an rc time constant, which is 0.100 μs for a certain camera.

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.