have you ever felt a force of 1N?if yes then give an example to explain your answer
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You might rather lightly introduce the idea that the length of the force arrows is measured in newtons (depending on whether you've used this measure before), and use an everyday example so that children get a feel for the size of a one newton slip force. It happens that about half a cup full of tea, pushed across a desk, results in a slip force of about one newton. You might also have something suitably heavy in the classroom that pulling it across the floor results in a slip force of 10 newton – you'll need to try this out to find something.
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