A 23kg child slides down a 4.0-m-high playground slide. She starts from rest, an

Question

A 23kg child slides down a 4.0-m-high playground slide. She starts from rest, and her speed at the bottom is 2.3m/s. Describe the energy transfers and transformations occurring during the slide. At the top of the slide, the child has gravitational potential energy of U(i). This energy is transformed into thermal energy of the child's pants and the slide and the kinetic energy of the child. Submitted, grade pending What is the change in the combined thermal energy of the slide and the seat of her pants? Express your answer to two significant figures and include the appropriate units. Delta E th=

Explanation / Answer

Eth = 840.76 J mgh - mv^2/2

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