Assuming the downward direction to be positive, the acceleration of gravity is about 10 m/s . this means that a) the distance of a falling body increases by 10 m every second. b) the time of a falling body is reduced by one second every 10 m. c) the velocity of a falling body increases by 10 m/s every second. d) the velocity of a falling body increases by 1 m/s every 10 seconds.

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.