How does the speed (in a vacuum) of a high-frequency ...

[armygirl]

How does the speed (in a vacuum) of a high-frequency electromagnetic wave compare with a low-frequency electromagnetic wave?
 
  A) the lower-frequency wave has the higher speed because speed is inversely related to frequency
  B) the two waves have the same speed because the speed of light is constant
  C) the lower-frequency wave has the higher speed because it has the longest wavelength
  D) the higher-frequency wave has the higher speed

Question 2

Big Mike throws a baseball straight up and it eventually falls back to him. When the ball was at its highest point, what was its velocity and what was its acceleration? (remember to include magnitude and direction)
 
  What will be an ideal response?

[sierrahalpin]

Answer to Question 1

B

Answer to Question 2

Velocity was zero, acceleration was 9.8 m/s2 downward.