Two hockey pucks, labeled A and B, are initially at rest on a smooth ice surface and are separated by a distance of 18.0 m . Simultaneously, each puck is given a quick push, and they begin to slide directly toward each other. Puck A moves with a speed of 3.90 m/s , and puck B moves with a speed of 4.30 m/s . What is the distance covered by puck A by the time the two pucks collide

The distance covered by puck A before collision is  

Explanation:

From the question we are told that

   The label on the two hockey pucks is  A and  B

    The distance between the  two hockey pucks is D   18.0 m

     The speed of puck A is  

        The speed of puck B is  

The distance covered by puck A is mathematically represented as

  =>  

 The distance covered by puck B  is  mathematically represented as

=>  

Since the time take before collision is the same

substituting values

=>      

=>      

gas and liquid

well clustered together.

points close on a scatter diagram