A boy kicks a football with an initial velocity of 20 m/s at an ...

[cnetterville]

A boy kicks a football with an initial velocity of 20 m/s at an angle of 25 above the horizontal. If we neglect air resistance, the magnitude of the acceleration of the ball while it is in flight is
 
  A) 25 m/s2.
  B) 18 m/s2.
  C) 9.8 m/s2.
  D) 8.5 m/s2.
  E) 0 m/s2.

Question 2

A statue that is 2.3 cm tall is placed 15 cm in front of a convex mirror. The magnitude of the radius of curvature of the mirror is 18 cm.
 
  (a) Is the image real or virtual? (b) How far is the image from the mirror? (c) Is the image upright or inverted? (d) How tall is the image?

[Briannahope]

Answer to Question 1

C

Answer to Question 2

(a) virtual (b) 5.6 cm (c) upright (d) 0.86 cm