When the comet is closest to the Sun,
it has its maximum kinetic energy
and minimum gravitational potential energy. When the comet is far away from the Sun, it has maximum gravitational potential energy and minimal kinetic energy. It's faster when it's close because the Sun's gravity is pulling the comet closer. The opposite for when it gets farther away
No,
To emit light an electron has to jump down to a lower energy level but in an electron is unable to go any lower in ground state.
<u>Answer</u>:
The greatest possible acceleration of the car is 
<u>Explanation</u>:
-------------(1)
----------------(2)
Solving the equation (1) and(2)
Next lets assume that the front wheels contact with the ground N_A = 0
Choosing the critical case
