A 7-Kg Mass Slides Down a Smooth Incline $2$ B) 25 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 vertical direction is

A) 9.8 m/s $2$
B) 2.5 m/s $2$
C) 7.2 m/s $2$
D) 4.1 m/s $2$