A wind column with a mass of 1 kg has an initial velocity of 30 m/s before interacting with a wind turbine. After the interaction, the wind has a velocity of 10 m/s. How much energy was transferred from the wind to the turbine?

layer a is the exosphere and layer b is the thermosphere.   is the answer i think but i hope this .

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards

it is a negative acceleration