Force. Definition: A push or a pull Force can cause motion SI unit -> Newton (N)= 1 kg x 1 m/s 2 Sometimes pound ( lb ) can be used as a unit for force 1 Newton=0.22481 pounds force. Combining Forces. Balanced Force Equal and opposite forces = ‘balanced’
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No motion of hands
– force of attraction between two objects
---> pulling force
Factors Affecting Gravity