Yurem is pulling a wagon across the playground with a force of 10 N. He asks Elian a to help. She agrees and pushes the back of the wagon in the same direction with a force of 12 N. What is the net force acting on the wagon?

22N

Explanation:

Net force = F1 + F2

=12+10=22N

Both forces are applied in the same direction. So the net force 22N causes a change in the body's state of rest. When several forces act in a body, the body will move in the direction of the net force.

i am pretty sure it is c because when people are closer together, they cannot move as freely. picture being in a mostly full elevator, for instance. the people are right next to you, and you can barely move.

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