Conservation of Energy with Thermal Loss
A 2.0 kg block slides from rest down an incline of height 5.0 m. During its descent, a rough patch converts 40% of the block’s initial gravitational potential energy into thermal energy. What is the block’s kinetic energy at the bottom of the incline?
A
39.2 J
B
0 J
C
98.0 J
D
58.8 J
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