posted by Isis .
a) what is the momentum of a 4.6 kg baseball moving at 1.4 m/s?
b) a child is running with a velocity of 4.5 m/s and has a momentum of 120 kgm/s. What is the child's mass?
Physics ~MOMENTUM~ -
a) momentum is the product M*V
b) Divide the momentum by the speed