Answer:
the momentum of the child is 337.5 kg.m/s
Step-by-step explanation:
Given;
velocity of the wagon, v = 1.5 m/s
the combined mass of the child and the wagon, m = 225 kg
The momentum of the child is calculated as;
P = mv
substitute the given values of mass and velocity to determine the momentum,
P = 225 x 1.5
P = 337.5 kg.m/s
Therefore, the momentum of the child is 337.5 kg.m/s