Answer:
The free body diagram of John is shown in the attached figure (in the FBD john's mass is supposed to be concentrated at his center of mass and FBD is made of center of mass)
b) As shown in the FBD the ground reaction forces are:
i) In X direction 
ii) In Y direction 
c) The respective accelerations in x and y direction's is calculated by newton's second law as indicated under

Answer:
It’s is A
because the opposite direction will take her to the Red Queen
Explanation
The frequency of the radio waves from the fm station is:

And the speed of the waves corresponds to the speed of light:

Therefore, the wavelength of the radio waves can be found by using the following equation: