A ball is hung by a string from the ceiling of a car moving on a straight and smooth road. If th...

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A ball is hung by a string from the ceiling of a car moving on a straight and smooth road. If the string is inclined towards the front side of the car making a small constant angle with the vertical, then the car is moving with [Kerala PET 2012]
(a) Constant velocity
(b) Constant acceleration
(c) Constant retardation
(d) Increasing acceleration
(e) Decreasing retardation
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