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Phoebe Physics pulls a wagon with a force of 80 N.a) What is the net force if the force of friction between the wagon and the ground is 12 N?b) If she uses 80 N to pull the wagon through a mud puddle, and the net force on thewagon is 38 N, what friction force acts on the wagon?

Question

Phoebe Physics pulls a wagon with a force of 80 N.a) What is the net force if the force of friction between the wagon and the ground is 12 N?b) If she uses 80 N to pull the wagon through a mud puddle, and the net force on thewagon is 38 N, what friction force acts on the wagon?

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Solution

a) The net force can be calculated by subtracting the force of friction from the force applied. In this case, Phoebe is pulling the wagon with a force of 80 N and the force of friction is 12 N. So, the net force would be 80 N - 12 N = 68 N.

b) If the net force on the wagon is 38 N while Phoebe is still applying a force of 80 N, the friction force can be found by subtracting the net force from the applied force. So, the friction force would be 80 N - 38 N = 42 N.

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