Worksheet Answer Key for Net Force - Physics, Exercises of Physics Fundamentals

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Aim 5.3: Net force name: yr et force = examples: 1. When two or more forces are acting on the same object in the SAME direction, you ADD the forces. aye 25N > +20N >= _5L ~Zo¥ Unbelerve(. CU nig’ 2s 5 — Net force 20N———> 25N+20N=45N to the right 2. When two or more forces are acting on the same object in OPPOSITE directions, you subtract the forces. 12N> a ONE 20 untolanud +—i0Nn . 12h—p Not force WN~10N=2N to the right When forces are BALANCED, they - do act mov €& “DE = ON (zen) 3. A big trailer pulls a box 400 N to the left and a little trailer pulls the box 200 N to the right. What is the net force? -400N <= —> +200N Is it balanced or unbalanced? [Al net force = Zoow oo WJ = PO =, = toed —tuthelanul Go) Net Force = + 200 N — 400 N =- 200 N (left) 4. in the following examples, the people are all pushing books. Determine the net force of each and tell if the forces are balanced or unbalanced. if it is unbalanced use an arrow in the greater direction to show this. Kok, py Ket, ey “)ou Oi 10N> <€ 15N Ba 20N > €1N Tan 1qv unblaned