A light ray is reflected by two mirrors that are perpendicular. ...

[mrsjacobs44]

A light ray is reflected by two mirrors that are perpendicular. The new direction of the ray is
 
  A)
 
  180 from the original direction.
  B)
 
  135 from the original direction.
  C)
 
  45 from the original direction.
  D)
 
  between 90 and 180 from the original direction.
  E)
 
  90 from the original direction.

Question 2

When is the average acceleration of an object equal to the instantaneous acceleration?
 
  A)
 
  always
  B)
 
  never
  C)
 
  only when the acceleration is constant
  D)
 
  only when the acceleration is increasing at a constant rate
  E)
 
  only when the acceleration is decreasing at a constant rate

[robbielu01]

Answer to Question 1

A

Answer to Question 2

C

[mrsjacobs44]

TY

[robbielu01]

You're welcome