A quarter is flipped up in the air at the start of a football game and returns to the point from which it was flipped after 2.5s. What would be the quarter’s original speed, presuming that the acceleration of the quarter is9.8ms2 downward?

Sawyer is studying diffraction. he draws a diagram of a plane wave to show how light waves travel. which best describes sawyer’s error? the wave fronts should be perpendicular to the direction in which the waves move. the arrow showing the direction of movement of the waves should be pointing to the left. the arrow showing the direction of movement of the waves should be pointing downward. the wave fronts should be both parallel and perpendicular to the direction in which the waves move.