Ateam of eight dogs pulls a sled with waxed wood runners on wet snow ( the dogs have average masses of 19.0 kg, and the loaded sled with its rider has a mass of 210 kg. (a) calculate the magnitude of the acceleration starting from rest if each dog exerts an average force of 185 n backward on the snow. (b) what is the magnitude of the acceleration once the sled starts to move? (c) for both situations, calculate the magnitude of the force in the coupling between the dogs and the sled.

1) when you rub your hands together quickly, the kinetic energy is converted to mechanical energy.2) thermal energy from the sun travels to earth as infrared waves.3) energy is transferred through the matter of space by electromagnetic waves. 4) when a match is burned, chemical potential energy is converted to thermal and radiant energy. 5) seismicwaves are caused by back and forth movement , or vibration, of an object. 6) mechanicalenergy in an engine changes thermal energy into kinetic energy to make a car move.

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