An Object with a Mass of 5

Multiple Choice

An object with a mass of 5.5 kg is allowed to slide from rest down an inclined plane. The plane makes an angle of 30 ^o with the horizontal and is 72 m long. The coefficient of friction between the plane and the object is 0.35. The speed of the object at the bottom of the plane is

A) 5.3 m/s.
B) 15 m/s.
C) 24 m/s.
D) 17 m/s.
E) 11 m/s.