Help please what is the net acceleration of a 9 kg block that is being pulled with a horizontal 67 N force if there
is a frictional force of 6 N acting on the block?
Give your answer in m/s² and round to one decimal place.

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.