Kind of a trick question:) you don't need to know how far from the earth he is just use
F=ma
F=78kg*9.8m/s^2=764.4N
Or 171.8 lbs
Answer: friction muscular
Explanation:
if my answer is correct mark as brainliest
Temperature difference is required, so i’m guessing - a. thermometer - would be required to check that temperature.
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