Question

Using superconducting bearing assemblies on a futuristic skateboard, your 59 kg friend climbs the steps to the top of a skateboard ramp that is vertically 11 m above the ramp's base. If at the bottom of the ramp your friends speed is reported as 11 m/s, how much thermal energy was lost to friction while racing down the ramp?

Answer 1

At the bottom At the bottom Speed Valimis height ho Total energy Kitu = 12 mit migh = 1 / 2 (59) (15 to 35.69.5 J. At the top speed (V)=0 Total enagy height hlm.. aktu mut migh = 0+ 59(9-8)()) E 636002 J lost of energy él E-E, as thermal 6360.2 3569.5 2790.7 J