The Physicist
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 and velocity . He had about before the civilians got crushed by the massive train. He knows that he can exert a force of .
He has a Forcinator, that can multiply his force by , but it might blow up and destroy the city. Does he need to risk it?
If answer is no - Give your answer as value of the Mr.Physicians force
If answer is yes - Give your answer as value of the train's momentum
(Note - Ignore external forces like friction as this is a theoretical question)
The answer is 50001.
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1 solution
F = t P 1 − P 2
Momentum = Mass x Velocity
where P 1 − P 2 is rate of change of momentum(Initial momentum,10000 - Final momentum, 0) and (t, 5 seconds) is time.
F = 5 1 0 0 0 0 − 0 = 5 1 0 0 0 0 = 2 0 0 0 N e w t o n s
Clearly, the Physician can stop the train, so he does not need to risk it and he's awesome!
Answer = No = − 1 9 9 9 + 5 0 0 0 0 = 5 0 0 0 1