A 5.80-kg howler monkey is swinging due east on a vine. It overtakes and grabs onto a 6.80-kg monkey also moving east on a second vine. The first monkey is moving at 11.8 m/s at the instant it grabs the second, which is moving at 7.80 m/s. 1) After they join on the same vine, what is their common 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.