I need help :(( pls im struggling rn

Which of the following represents an upside-down image? o a. +doo b. -doo c. +mo d.-m

Ball bearings are made by letting spherical drops of molten metal fall inside a talll tower-called a shot tower- and solidify as they fall. a-if a bearing needs 4.0 s to solidify enough for impact, how high must the tower be? b- what is the bearing's impact velocity?

Current vs. forcewhat type of relationship does this graph show?