Jimmy is preparing a slide show to teach the grade three students the importance of cleanliness. Which element should he use in order to hold their attention? A. plain background
B. minimal images
C. animation
D. layout
E. speaker notes

the omega button is one of them.

only #2 represents an object at rest on a table.

in #1, there is no normal force due to the table; the object is accelerating downward.

in #3, the vertical forces are not balanced; the object is accelerating downward.

in #4, neither the vertical nor the horizontal forces are balanced. the object is accelerating upwards and to the right.