Posted by mTaq14 on .
I need help with this problem because it is confusing me. I tried to anwer it, though, so can someone please correct me if I am wrong?
Suppose your mass is 45 kg and the mass of your little brother is 25 kg. You push your brother +100 N and an equal but opposite force of 100 N is returned to you. Use the formula F=m/a to compute acceleration.
The work:
a= 100 N/45 kg
a= (100 kg* m/s2)/45= 2 m/s2
So your acceleration is 2 m/s2
a= 100 N /25 kg
a= (100 kg* m/s2)/25 kg= 4 m/s2
So your little brother's acceleration is 4 m/s2
Thanks!

Physical Science 
drwls,
Those answers are correct