**Marissa drags a 22 kg duffel bag 16 m across the gym floor. If the coefficient of kinetic friction between the floor and bag is 0.15 , how much thermal energy does Marissa create?**

**Known variables:**

**mass (m)= 22 kg**

**drag (s)=16 m**

**coefficient of kinetic friction=(μ) .15**

**gravity (g)= 9.8**

**thermal energy equation: μ*m*g*s**

**μ m g s**

(.15) x (22) x (9.8) x (16)

=520 J

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