When you kick a football, it flies away easily due to its relatively low mass and inertia. In contrast, kicking a stone of the same size hardly moves it and can cause injury because the stone has more mass and greater inertia.
What happens when you kick a football compared to kicking a stone of the same size with equal force?
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When you kick a football, it flies away easily because it has less mass and inertia. In contrast, kicking a stone of the same size hardly moves it and can cause injury to your foot. The stone has more mass and inertia, making it more resistant to changes in its state of motion.