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A speeder in an automobile passes a stat...

A speeder in an automobile passes a stationary policeman who is hiding behind a bill board with a motorcycle. After a `2.0` sec delay (reaction time) the policeman accelerates to his maximum speed of `150km//hr` in `12 sec` and catches the speeder `1.5km` beyond the billboard. find the speed of speeder in `km//hr`.

Text Solution

Verified by Experts

122.7 km/hr
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Knowledge Check

  • A man can row his boat at speed of 4km/hr and he finds that the time taken rowing upstream is double to that taken downstream. Find the speed of the stream (in km/hr) A. 1.5 B. 1.3 C. 2 D. 1

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