A Sled Is on an Icy (Frictionless) Slope That Is

Multiple Choice

A sled is on an icy (frictionless) slope that is 30 above the horizontal. When a 40-N force, parallel to the incline and directed up the incline, is applied to the sled, the acceleration of the sled is 2.0 m/s², down the incline.. The mass of the sled is:

A) 3.8 kg
B) 4.1 kg
C) 5.8 kg
D) 6.2 kg
E) 10 kg