What is the physical quantity represented by X and what is its SI - unit [y=(3.0m/s) + (X×2.0s)]

1) Acceleration
2) velocity
3) length
4) time

please hlp

Answer and I will give you brainiliest

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.

Answer the radiant sun;

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