I think it is there is no change in the energy's sunlight
Explanation:
Let the speeds of father and son are
. The kinetic energies of father and son are
. The mass of father and son are 
(a) According to given conditions, 
And 
Kinetic energy of father is given by :
.............(1)
Kinetic energy of son is given by :
...........(2)
From equation (1), (2) we get :
..............(3)
If the speed of father is speed up by 1.5 m/s, so the ratio of kinetic energies is given by :


Using equation (3) in above equation, we get :

(b) Put the value of
in equation (3) as :

Hence, this is the required solution.
Mars is 139.58 million miles away from the sun. mars is red because its soil has iron oxide (rust particles) in it.
The universe is made up of baryonic matter.(neutrons,electrons,protons)
<span>The answer to your question is choice: D</span>