Please help 1. find out the total distance travelled in 10 seconds by calculating the total area under the graph.

2. find out the acceleration in 1st 04 seconds by calculating the slope.

3. what is the magnitude of acceleration when the graph is horizontal ? ( slope = 0 )

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.