A 260-N Crate Starting at Rest Slides Down a Rough 4

Multiple Choice

A 26.0-N crate starting at rest slides down a rough 4.8-m-long ramp,inclined at 21.0° with the horizontal.18 J of energy is lost to friction.What will be the speed of the crate at the bottom of the incline?

A) 27.1 m/s
B) 5.81 m/s
C) 6.36 m/s
D) 4.49 m/s