FIGURE 8-8 -An Object of Mass 4 Kg Starts at Rest from at Rest

question 42

Multiple Choice

FIGURE 8-8
-An object of mass 4 kg starts at rest from the top of a rough inclined plane of height 10 m as shown in Figure 8-8. If the speed of the object at the bottom of the inclined plane is 10 m/s, how much work is done by the force of friction? Use g = 10 m/s².

• A) -100 J
• B) 100 J
• C) 0
• D) -200 J
• E) 200 J