An arrow is fired from the top of a cliff of height 22 m. The arrow has an initial velocity of 32 m/s [30° above the horizontal]. a) Calculate the horizontal and vertical components of the rock’s initial velocity.
b) Calculate the time it takes for the arrow to fall to the ground.
c) What is the horizontal displacement of the arrow in this amount of time?

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.