Imagine that you drop a ball. it
bounces a few times, but then it stops. your friend says
that the ball has lost all of its energy. using what you
know about the law of conservation of energy, respond
to your friend's statement.

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.