Una gota de lluvia (m = 3.54 x 10-5 Kg.) cae verticalmente a velocidad constante bajo la influencia de la gravedad y la resistencia del aire. Después de que la gota ha descendido 121 m, ¿cuál es el trabajo (mJ) realizado por la gravedad?

To practice problem-solving strategy 10.1 for energy conservation problems. a sled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slides a distance d1 down the slope and then covers the distance d2 along the horizontal terrain before stopping. find the coefficient of kinetic friction μk between the sled and the ground, assuming that it is constant throughout the trip.