If mars is located an average of 228 million km from earth, and radio waves travel at 300,000 km/s, how many minutes does it take a communication to reach earth from mars ?

It depends

Explanation:

Earth and Mars are constantly moving and rotating around the sun, as such the distance between them changes dramatically throughout the year. At their closest points signals only take a little more than 4 minutes to travel between the two planets, but it can sometimes take as long as twenty minutes.

the answer is yes

it has kinetic energy

reason

an object has kinetic energy when you stop the force carrying it, the object will stay in motion.

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