If such a particle is moving, with respect to the laboratory, with a speed of 0.950 c , what average lifetime is measured in the laboratory?

Complete Question

The positive , an unstable particle, lives on average  (measured in its own frame of reference) before decaying.

If such a particle is moving, with respect to the laboratory, with a speed of 0.950 c , what average lifetime is measured in the laboratory?

The value is  

Explanation:

From the question we are told that

   The the average live time of   is  

    The speed of of  in the laboratory is  

Generally the average life time of the positive measured in the laboratory  is mathematically represented as

the device is called “ rocket engine”