1 résultats pour "gravity"

• GRAVITY

  GRAVITY 1.The Earth's pull In the autumn the apples on an apple tree ripen and, if they are not picked, they one by one detach themselves fromthe branches and drop to the ground. A force must be pulling them downwards. When you throw a ball into the air, it travels up and over inan arc, but soon falls back to the ground. Again, a force must be pulling it downwards. This downwards force is gravity. It is the attraction,or pull, the Earth exerts on everything on or near it. All the other heavenly...