two student travel from school to their jobs at the bowling alley, which is 2.5 km away. one student rides a scooter at 0.9 m/s , and the other student rides a bike at 12 mi/ hr. how long does the trip take for each of them

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

the answer is c. the lower legs are levers, and the knees are fulcrums. the ankles hold the loads.