A highway curve of radius 100 m, banked at an angle of 45, may be ...

[danielfitts88]

A highway curve of radius 100 m, banked at an angle of 45, may be negotiated without friction at a speed of
 
  A) 22 m/s.
  B) 31 m/s.
  C) 44 m/s.
  D) 67 m/s.

Question 2

Starting from very far away, an object is moved closer and closer to a diverging lens, eventually reaching the lens. What happens to its image formed by that lens? (There could be more than one correct choice.)
 
  A) The image eventually changes from real to virtual.
  B) The image keeps getting larger and larger.
  C) The image gets farther and farther from the lens.
  D) The image gets closer and closer to the lens.
  E) The image always remains virtual.

[yifu223]

Answer to Question 1

B

Answer to Question 2

B, D, E