When a train stops suddenly, passengers in the running train feel an instant jerk in the forward direction because of

Options :
  1. the back of seat suddenly pushes the passengers forward
  2. upper part of the body continues to be in the state of motion whereas the lower part of the body in contact with seat remains at rest
  3. Nothing can be said
  4. None of the above
Answer and Explanation :-

Answer: Option 2


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By: Mayank Pandey On: Aug/25/2014

while we are sitting in a running train and moving with it we feel comfortable but when suddenly the break is applied to stop the train the lower part of the body i,e. the legs which was in the motion with the running train suddenly comes to rest with train nd the upper part which continues moving gets a jerk in the forward direction.

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I run because if I didn't, I'd be sluggish and glum and spend too much time on the couch. I run to breathe the fresh air. I run to explore. I run to escape the ordinary. I run.to savor the trip along the way. Life becomes a little more vibrant, a little more intense. I like that.
-Dean Karnazes Ultramarathon Man: Confessions of an All-Night Runner