Question #282217
A person has a mass of 70 kg. What is this persons weight? What is the force that this person exerts onto earth? Why is the earths acceleration because of this person?
Expert's answer
The weight is
W=mg=70•9.8=686 N.
The force that person exerts on earth is 686 N as well.
The earth's acceleration is zero because it already touches the person.
