Gravity makes a cat fall down., , The dog uses force to open the door., , A horse runs at high speed., , I saw pizza and soon, my mouth was in motion. , , When a dog runs down the hill, it accelerates. , , A balloon has almost no mass inside., , The bag has a lot of weight. It weighs 5 kgs., , When Mario saw Fortnite, he accelerated towards it., .

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