Resistive forces are present in three distinct places in this experiment. (i) The bob exerts a frictional force on the ball as it is brought to rest relative to the bob during the collision. (ii) There is friction in the pendulum support. (iii) There is air resistance as the pendulum swings. Compare and contrast these three aspects of friction. What effect would each of these resistive forces have on the results

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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