Dierdre drew a diagram to compare the three types of mirrors. A Venn diagram with 3 intersecting circles. One labeled convex. One labeled Concave. One labeled plane. There is an X in the convex circle only. There is a Z in the overlap section of convex and plane. There is a Y in the overlap section between the convex and concave circle. Which labels belong in the areas marked X, Y, and Z?

Mutt and jeff are running along a path each pushing a cart loaded with rocks. if mutt's wagon has a mass two times greater than jeff's and they want to stay together, arriving at their destination at the same time, what must happen? a) jeff should slow down so mutt can catch up. b) mutt must use half as much force to push his cart. c) mutt must use twice as much force to push his cart. d) mutt and jeff will use the same force, but mutt will take bigger steps.