Un auto avanza con MRUV. Cuando su rapidez es de 4 m/s, se le aplicaron los frenos, y se detiene después de recorrer 20 m. ¿Qué tiempo demoró el auto en detenerse?

explanation:

newton's third law, for every action there is an equal and opposite reaction.

wavelegth as in spectrum red oygbiv

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

im srry but ur wrong the answer is d a smooth rock, some red dirt, and an empty bird's nest.