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Unbalanced forces lead to a change in an object's speed or direction. The document discusses how if only one wind machine is blowing on a skater, or if the pull on one end of two hooks is greater than the other end, the forces are unbalanced and the skater or hooks will start to accelerate and move in the direction of the greater force. Unbalanced forces cause an object to change its speed or direction through acceleration.
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- 1. Unbalanced forces Unbalanced forces lead to a change in speed or direction. What if only one wind machine is blowing on the skater? The forces acting on her are no longer balanced so she will start to move to the left. Her speed will change – this is called acceleration.
- 2. 11 N 10 N What happens if the pull on one end is greater than the pull on the other end? unbalanced forces movement When forces are unbalanced The forces acting on the hooks are no longer balanced. Both hooks will start to move to the left – their speed will change. This is called acceleration. Unbalanced forces lead to a change in speed or direction.