The sum of the initial and final velocity is divided by 2 to find the average. The average velocity calculator uses the formula that shows the average velocity (v) equals the sum of the final velocity (v) and the initial velocity (u), divided by 2.
The speed obtained by
the pilot is not accurate since it is measuring the rate of travel in the wind,
true velocity is that compared to the ground. Therefore the speed of the wind
is:
v wind = 165 - 145
v wind = 20 km/h<span>
<span>Therefore the wind velocity = 20 km/h against the plane.</span></span>
The power output in horsepower to raise the object is 13.14 horsepower(Hp).
<u>Explanation:</u>
It is known that power required to perform a work is defined as the ratio of energy utilized to do that work per unit time. So, we can write power as the ratio energy utilized to time taken for completing that work.
Thus,
As we known that energy utilized to complete a work will be equal to the work done on the object. Thus,
So,
As it is given in the question that mass of the object is 2000 kg and the object is displaced to 5 m from the ground. So the displacement will be 5 m and the weight of the object can be determined by multiplying the mass with acceleration due to gravity.
Thus, the power formulation can be written as
But, we need to find in horsepower unit. So, the conversion between watt and horsepower unit is
1 horsepower (hp) = 745.7 watts
Thus,
So, the power output in horsepower unit is 13.14 horsepower (Hp).