1.16 - know that friction is a force that opposes motion

Friction slows objects down.
→ It is a force that opposes motion.

There is friction everywhere, except in space.

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1.15 - calculate the resultant forces that act along a line

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If there is an unbalanced force, the object will accelerate in the direction of the larger force. → This is the resultant force . To calculate it : 1. Look at which side has the larger force. 2. Subtract them. → The arrow should be pointing towards the larger side. 3. The result is the resultant force.      5N ←◼️ → 10N 10 - 5 = 5N Hence, the object will move forward and the resultant force is 5N.
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