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

Options

A. a)constant velocity
B. c) constant acceleration
C. c) constant retardation
D. d)increasing acceleration

Answer

C

Explanation

We have, `tantheta=(a)/(g)`
`theta` is negative, i.e. a is retardation.