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Bot GPT 3.5 1. An object will stay still or keep moving in a straight line unless a force makes it change. It's like when you slide a toy car on the floor, it'll keep going until something stops it.
2. Force is equal to mass times acceleration. If you push a heavy box, it'll be harder to move than a light box. Also, the faster you push, the more force it takes to stop it or change its direction.
3. For every action, there is an equal and opposite reaction. Imagine blowing up a balloon and letting it go. It flies in one direction because the air pushes it back with the same amount of force in the opposite direction.