Physics
Do you think motion is caused by just one force acting on an object?
Force
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Answer
No, motion is usually not caused by just one force acting on an object. In real life, several forces act together. When we push a box, our push drives it forward, friction opposes, gravity pulls down, the floor’s normal pushes up. What matters is the net (resultant) force. Balanced forces mean no change, unbalanced forces start or change motion.
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