Two toy ducks attached to each other by a string, are being pulled by a child. The front duck is m1= 5.0 kg and the back duck is m2= 2.0 kg. The happy guy pulls them with a force of 10 N and friction exists. The toys are moving with constant velocity.

Question

Two toy ducks attached to each other by a string, are being pulled by a child. The front duck is m1= 5.0 kg and the back duck is m2= 2.0 kg. The happy guy pulls them with a force of 10 N and friction exists. The toys are moving with constant velocity. 
A) if the coefficient of kinetic friction is = 0.12, find the force of friction which is acting on the second duck. 
B) calculate the tension in the string connecting the ducks

I don't know how to start these 2 questions..

Anonymous · Answer

I have the answers but i don't know if i am right A) 2.4