If you slide down a rope, it’s possible to create enough thermal energy to burn your hands or your legs where they grip the rope. suppose a 40 kg child slides down a rope at a playground, descending 2.0 m at a constant speed. how much thermal energy is created as she slides down the rope?

Which explanation describes the forces involved for a person to walk down the sidewalk? a. the person's feet push backward on the sidewalk; the sidewalk pushes backward on the person. b. the person's feet push forward on the sidewalk; the sidewalk does not push on the person. c. the person's feet push backward on the sidewalk; the sidewalk pushes forward on the person. d. the person's feet push forward on the sidewalk; the sidewalk pushes forward on the person.

Explain the comparisons between nature and packingtown that appears on pages 81 and 82 answer

The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.