Will mark as brainlest pls help

Calculate the mass of an object that has a momentum of 100kg x m/sec and velocity of 4 m/sec

If jerome is swinging on a rope and transferring energy from gravitational potential energy to kinetic energy, is being done.

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.