Tính Chu Vi Hình Chữ Nhật Có Chiều Dài 4 - Gauthmath

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Question

When Ronaldo kicks the ball, at the highest point of ball both Earth and ball attract each other with the same magnitude of force. Why then the ball moves towards Earth and not the Earth?SHOW LESS0

Solution

The ball moves towards Earth because the gravitational force pulling the ball towards the Earth is greater than the gravitational force pulling the Earth towards the ball.

Explanation:

  1. The force of gravity between two objects is given by Newton's law of universal gravitation: F = G * (m1 * m2) / r^2, where G is the gravitational constant, m1 and m2 are the masses of the two objects, and r is the distance between the centers of the two objects.
  2. At the highest point of the ball's trajectory, the distance between the center of the Earth and the center of the ball is the same, so the distance r is the same for both.
  3. The mass of the Earth is significantly larger than the mass of the ball, so m1 (mass of Earth) >> m2 (mass of the ball).
  4. Since the mass of the Earth is much larger, the force of gravity between the Earth and the ball is greater than the force of gravity between the ball and the Earth.
  5. Therefore, the ball moves towards the Earth because the gravitational force pulling the ball towards the Earth is greater than the gravitational force pulling the Earth towards the ball.
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