The Physicist

$\Large \color{#69047E}{Lorenz \ W}$ lived in the awesome town of Physicia. He was known as the Physicist, the legendary hero of Physicia. He was strong, humble and smart. He had invented the Atomizer Port, a teleportation device that teleported just about anything to anywhere, with just two Atomizer Ports and a stable connection.

Due to an unstable connection, caused by the evil Dr.Random, who never made a calculated and analysed move in his life, a speeding train was heading towards civilians.

It was up to the Physician to stop the runaway train, of mass $1000kg$ and velocity $10 \dfrac{m}{s}$. He had about $5 \ seconds$ before the civilians got crushed by the massive train. He knows that he can exert a force of $52000 \ Newtons$.

He has a Forcinator, that can multiply his force by $2 \ times$, but it might blow up and destroy the city. Does he need to risk it?

If answer is no - Give your answer as $- 1999 +$ value of the Mr.Physicians force

If answer is yes - Give your answer as $2 +$ value of the train's momentum

(Note - Ignore external forces like friction as this is a theoretical question)