Moving up along the inclined road, the wind creates a drag resistance on the car of FD=1.3v2, where FD is the drag force in N and v is the velocity in m/s. The drag force acts in the opposite direction of the car’s velocity. The car acceleration is 5 m/s2 starting from rest. Find the engine's input power when t=4s.

this is poiselle's equation from fluid mechanic in physics. mech eng

area of focus

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