I have a test tomorrow and can't figure these problems out. please help. a. Pam has a momentum of 100kg m/s to the right.
If she is traveling at 20m/s to the right, what is her mass?

b. Donna has a momentum of 100kgm/s to the left. If she has a mass of 70kg, what is her velocity?

c. Assuming there are no other forces acting on Donna or Pam, what is the net momentum of the system consisting of Donna and Pam?

d. If Donna and Pam collide, does the net momentum increase, decrease, or stay the same?