Back on Earth now, I push a cart up a 5 degree hill (that is, the slope of the hill is 5 degrees from horizontal) at 2 m/s. What is my horizontal and my vertical
velocity? (Say which is which!)

i guess that visual aids present persuasive examples to what you are presenting, some factors would be theme (does it fit with the color, information, what you are presenting), size (can you see it, is it a big enough span of data/information), and overall look of the visual aid.

hope this : )

another example of kinetic energy would be,

kinetic energy   >     moving energy

answer   >   letter choice (c),   a hammer falling off a table.

hope that !                                         : )