A boy throws a stone from the top of a cliff into the sea. When the stone leaves his hand it is travelling horizontally at a velocity of 10ms^-1. A) How long will it take the stone to reach the sea, a distance 8 meters below?

B) How far from the bottom of the cliff will it be when it enters the sea?

C) What will its vertical velocity be when it hits the water?​

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.