Question

A horse-drawn coach is deceleratinng at 3.0 m/s² while moving in a straight line. A lamp of mass 0.844 kg is hanging from the ceiling of the coach on a string 0.6 m long. The angle that the string makes with the vertical is

A) 8.5º toward the front of the couch.
B) 17º toward the front of the couch.
C) 17º toward the back of the couch.
D) 2.5º toward the front of the couch.
E) 0º or straight down.