Astudent and the waxed skis he is wearing
have a combined weight of 850 newtons. the skier
travels down a snow-covered hill and then glides
to the east across a snow-covered, horizontal
surface.
53 determine the magnitude of the normal force
exerted by the snow on the skis as the skier
glides across the horizontal surface.

As a car drives with its tires rolling freely without any slippage, the type of friction acting between the tires and the road is 100) a) static friction. b) kinetic friction. c) a combination of static and kinetic friction. d) neither static nor kinetic friction, but some other type of friction. e) it is impossible to tell what type of friction acts in this situation.

Adding more pulleys to a system of pulleys needed to lift an object. a. increases the force b. decreases the force c. increases the amount of work d. decreases the amount of work

Scientists follow specific processes in order to determine valid explanations and conclusions from observations. david observed strange lights in the sky above his home outside of roswell, new mexico. the only explanation that makes sense to him is that there are ufos in the area. what should david do next to verify his explanation?