A $22$ kg child slides down a $2\mathrm{.}2-$m$-$high playground slide. She starts from rest, and her speed at the bottom is $2\mathrm{.}8\frac{m}{s}.$

Part A

What is the change in thermal energy of the slide and the seat of her pants?

Express your answer with the appropriate units.

$E_{Th}=$

$$

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