Problem 27 (Similarity). When a crate is pushed at speed ve across a smooth floor with a low coefficient of friction, it has kinetic energy KE1. When the same crate

is pushed at the same speed across a rough floor with a higher coefficient of friction, its kinetic energy is KE2. What is the relationship between KE, and KE2? (а) КЕј > КЕ> (b) КЕ, — КЕ, (с) КЕ < КЕ,(d) (d) Not enough information: need mass of crate (e) None of these

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