A block is initially at rest on top of an inclined ramp that makes an angle. The base of the ramp is length D.

the independent variable, or the one that is intentionally manipulated is the speed.

f=ma newton

f=100x2.5=250n

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

i already answered it by 34/s