The friction is smaller between the blanket and the floor than between the furniture and the floor. In which situation is it better to have low friction? 1.a skydiver uses a parachute

2.a student walks down a hallway

3.a ladder leans against the wall

4.a hockey puck slides toward the goal

Jackson is designing a new heater, and he wants to experiment with different thermally conductive materials. which of these materials would be useful in conducting heat?

Me with this and you will be marked brainliest

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.