A 70kg skier slides down a very slick (no friction) 25 degree incline for 50 meters. At the bottom of the slope he runs into a 50 kg youth skier who was standing still watching him. Trying to keep the young person from falling the skier grabs and holds on to him. They slide together across the flat but partially melted snow (some friction) a distance of 30 meters finally coming safely to rest. The softer level snow must have had a kinetic friction coefficient of (assume no loss of the skiers speed as he encounters the flat ground just before the collision)

Does anyone have the answers to online physics course plato course physics, semester a v3.0

Which of the following list the divisions of the geologic time scale in order from longest to shortest

16. a brave but inadequate rugby player is being pushed backward by an opposing player who is exerting a force of 800 n on him. the mass of the losing player plus equipment is 90.0 kg, and he is accelerating at 1.20m/s2 size 12{1 "." "20"" m/s" rsup { size 8{2} } } {} backward. (a) what is the force of friction between the losing player’s feet and the grass? (b) what force does the winning player exert on the ground to move forward if his mass plus equipment is 110 kg? (c) draw a sketch of the situation showing the system of interest used to solve each part. for this situation, draw a free-body diagram and write the net force equation.