What changes a ball velocity
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Ответ:
Answer/Explanation: Speed and direction can change with time. When you throw a ball into the air, it leaves your hand at a certain speed. As the ball rises, it slows down. Then, as the ball falls back toward the ground, it speeds up again. When the ball hits the ground, its direction of motion changes and it bounces back up into the air.
Ответ:
So when is water at its densest? Well, it turns out this happens to be around 4°C. This is when the water molecules are closest together. Cooling water further than 4°C causes the density to decrease up to the point where it becomes a solid which is less dense than the liquid.
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