Answer:
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

=> 
=> 
The mass of an object divided by its volume
Astronauts in space<span> do </span>talk<span> to each other. In the spacecraft, there is plenty of air, so they just </span>talk<span> normally. When they are spacewalking, they </span>talk<span> by means of radios in their helmets. The radio waves, again, have no problem in </span>space<span>, but they're not sound.</span>
Superconductor, conductor, semiconductor, insulator
Answer:
Work = Force × distance
= m × g × d
= 12 × 9.8 × 0.5
= 58.8 N
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