A 20-N Crate Starting at Rest Slides Down a Rough

question 43

Multiple Choice

A 20-N crate starting at rest slides down a rough 5.0-m long ramp,inclined at 25° with the horizontal.30 J of energy is lost to friction.What will be the speed of the crate at the bottom of the incline?

• A) 0.98 m/s
• B) 2.1 m/s
• C) 3.5 m/s
• D) 4.7 m/s

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