Question

when garvity become negative?

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Answer 1

Answer:

Since the Earth's mass is positive and the -1 kg mass is negative, there will be a repulsive force acting on the mass. But because of Newton's second law, a repulsive force acting upward on a negative mass would cause it to accelerate downward.

Answer 2

Answer:

Towards the center of the Earth, the gravity is defined to the be negative. At all points on the trajectory of a projectile, the gravitational acceleration points in the same direction, which is downwards toward the center of the Earth. So, the sign for the gravitational acceleration is always negative.

Explanation:

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