A flatbed truck is carrying a 20.0-kg crate up a sloping road ...

[mydiamond]

A flatbed truck is carrying a 20.0-kg crate up a sloping road inclined 15.0 above the horizontal. The coefficient of static friction between the crate and the bed is 0.400.
 
  What is the maximum acceleration that the truck can have if the crate is to stay in place? A) 0.625 m/s2
  B) 1.25 m/s2
  C) 2.50 m/s2
  D) 3.16 m/s2
  E) 6.33 m/s2

Question 2

If Earth were twice as massive but it revolved at the same distance from the Sun, its orbital period would be
 
  A) 4 years.
  B) 3 years.
  C) 2 years.
  D) 1 year.
  E) 6 months.

[Mollythedog]

Answer to Question 1

B

Answer to Question 2

D

[mydiamond]

Gracias!

[amandalm]

Excellent