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A car is initially at rest, 330 m away f...

A car is initially at rest, 330 m away from a stationary observer. It begins to move towards the observer with an acceleration of `1.1 m s^(-2)` sounding its horn continuously. 20 s later, the driver stops sounding the horn. The velocity of sound in air is `330 m s^(-1)`. The observer will hear the sound of the horn for a duration of

A

20s

B

21s

C

`20(2)/(3)s`

D

`19(1)/(3)s`

Text Solution

Verified by Experts

The correct Answer is:
A
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