In slow pitch softball, the pitcher pitches the ball to the batter in a high arc. suppose the ball leaves the pitchers hand when it is 2.5 feet above the ground with an upward velocity of 27 ft/s. the batter hits the ball when it is 3.5 feet above the ground. how much time elapses between the pitch and the hit? (meant to be a math question)

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.