Un objet suit un mouvement rectiligne en étant poussé par une force de 10 newtons et en subissant une force de frottement cinétique de 8 newtons. L'objet possède une accélération de 2 m/s2 au cours de ce mouvement. Quelle est sa masse en kg?

Asled is being held at rest on a slope that makes an angle θ with the horizontal. after the sled is released, it slidesa distance d1 down the slope and then covers the distance d2 alongthe horizontal terrain before stopping. find the coefficient ofkinetic friction μk between the sled and the ground, assumingthat it is constant throughout the trip. find the coefficient of kinetic frictionμk. express your answer in terms of someor all of the variables d1, d2, and θ.