The answer is: none of the above.
Explanation:
When light reflects from a surface, the frequency, wavelength, and speed do not change. They remain the same.
Neglecting friction and air resistance, the first hill must be built 4 times higher than it is now.
Kinetic energy.
Kinetic energy is the type of energy observed in moving objects. In this case the football player is running, ie moving, so he/she must have kinetic energy.
I have one reason the reaction take place faster because the molecules are going at a faster pace because the temperature is rising
