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2. Calculate the following net forces.
a. Two people push a couch across a room. One pushes with 30 N. The other pushes with 50 N.
b. An uncle plays tug-of-war with his niece and nephew. The uncle pulls one side of the rope with a force of 95 N. The niece and nephew pull the other side of the rope with a force of 40 N and 45 N.
c. Two friends push their friend on a swing with a combined force of 15 N and 20 N.
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Answer:

A. The net force is 80 N.

B. The net force is 10 N going more towards the Uncle than the children.

C. The net force is 35 N.

Explanation:

Net force is the sum of the amount of force on either one side (addition) or two sides (subtraction).

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