20 poir 7. Two carts, each with a mass of 1.5 kg, move toward one another. a). If
the cart moving left is traveling at 10 m/s and the cart moving right is
traveling at 6 m/s, what is the magnitude and direction of the total
momentum of the system? b. What is the total momentum of the system
if the two carts have the same speed? *

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.