6. Imagine that you had no friction block for part 2 of the experiment. If you used a dynamics cart instead, how would your results be different? Could you use the same equations? Why or why not? (2 points)

The solar panels used by mark function because of the photoelectric effect. light shines on the cells causing electrons to be ejected from the metal, which produces an electric current. at night on mars, no light will fall on the solar cells and no electric current will be generated. according to your notes, what type of light is typically needed to cause the photoelectric effect? a)visible b)ultraviolet c)infrared

For the car in the picture ,in which direction is the normal force? -into the screen -down -out of the screen -up

Which describes an object in projectile motion? check all that apply.a.gravity acts to pull the object downb.the object moves in a straight path.c.the forward velocity of the object is 0 m/s.d.the object’s inertia carries it forward.e.the path of the object is curved.