Slanted Surfaces with Friction: a 6

Multiple Choice

Slanted surfaces with friction: A 6.0 kg box slides down an inclined plane that makes an angle of 39° with the horizontal. If the coefficient of kinetic friction is 0.19, at what rate does the box accelerate down the slope?

A) 4.7 m/s²
B) 5.2 m/s²
C) 5.5 m/s²
D) 6.2 m/s²