A ball is rolled off a horizontal tabletop so that it leaves the tabletop and takes 0.35 seconds to reach the ground. The ball lands 0.75 meters horizontally from the base of the table. a. Determine the horizontal velocity of the ball.
b. Determine the height of the table.

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 : )

no sign of dia of fuel cell

+15-35=-20

going in opposite directions