Work Energy And Power Question 192

Question: A force applied by an engine of a train of mass 2.05×106kg changes its velocity from 5m/s to 25 m/s in 5 minutes. The power of the engine is [EAMCET 2001]

Options:

A) 1.025MW

B) 2.05MW

C) 5MW

D) 6MW

Show Answer

Answer:

Correct Answer: B

Solution:

Power =Work donetime=12m(v2u2)t

P =12×2.05×106×[(25)2(52)]5×60

P=2.05×106W=2.05MW



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