A helicopter is flying horizontally with a speed of 444 m/s over ...

[notis]

A helicopter is flying horizontally with a speed of 444 m/s over a hill that slopes upward with a 2 grade (that is, the rise is 2 of the run).
 
  What is the component of the helicopter's velocity perpendicular to the sloping surface of the hill? A) 8.9 m/s
  B) 220 m/s
  C) 435 m/s
  D) 444 m/s

Question 2

What should be the angle between the reflecting surfaces of two plane mirrors in order for every incident beam to be parallel to its reflected beam?
 
  A) 0
  B) 30
  C) 45
  D) 60
  E) 90

[bookworm410]

Answer to Question 1

A

Answer to Question 2

E

[notis]

Excellent

[isabelt_18]

Gracias!