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Physics
A passenger in a moving train tosses a coin. If the coin falls behind him, the train must be moving with
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Q. A passenger in a moving train tosses a coin. If the coin falls behind him, the train must be moving with
Motion in a Straight Line
A
an acceleration
53%
B
a deceleration
16%
C
a uniform speed
13%
D
any of the above
18%
Solution:
As the coin falls behind him, force due to air must be backwards. Therefore, the train must be accelerating forward.