“Force” is just a push or a pull. Force is measured in newtons. One newton is roughly the force you need to lift a bar of soap.
But just because you push on something doesn’t mean it’ll actually move. Applying a force to an object as it moves will “do work” on it, and change its “energy”. Work and energy are measured in Joules, and one Joule is one newton times one meter — it’s roughly how much work you have to do to lift a bar of soap to waist height.
Energy comes in many forms: pushing on an object may increase its speed, or lift it up in the air, or heat it up, etc. Energy is a useful idea because it’s “conserved”: energy can change from one form to another, but the total amount stays the same.
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