A 7-Kg Mass Slides Down a Smooth Incline $2$ B) 35 M/s

Multiple Choice

A 7-kg mass slides down a smooth incline. The incline makes an angle of 30° with the horizontal. The acceleration of the mass in the horizontal direction is

A) 0 m/s $2$
B) 3.5 m/s $2$
C) 4.2 m/s $2$
D) 5.1 m/s $2$