Final answer:
The total momentum of the child and the wagon is 79.2 kg·m/s. This calculation is based on the combined mass of the child and wagon, 24 kg, and their velocity, 3.3 m/s.
Step-by-step explanation:
Momentum of a Child and Wagon
The total momentum of the child and the wagon can be found by multiplying the combined mass of the child and the wagon by their velocity. The mass of the child is 20 kg and the mass of the wagon is 4.0 kg, giving us a total mass of 20 kg + 4.0 kg = 24 kg. With a velocity of 3.3 m/s, we can calculate the momentum (p) using the formula p = m × v, where m is the mass and v is the velocity.
Therefore, the total momentum is:
p = 24 kg × 3.3 m/s = 79.2 kg·m/s.
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