The force f = (-90, 40) n acts on a mass of 8 kg. at time t = 0 s, the mass is initially at rest. what is the magnitude of the force (in n)? what are the (x, y) components of the acceleration vector (in m/s^2)? what are the (x, y) components of the velocity vector (in m/s) after 1 seconds?

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.