In power wiki, the limited amount of energy to destroy a building is 1046000000 Joules. Newton's second law of motion states that F = ma, or net force is equal to mass times acceleration.

1046000000j / 1m = 1046000000 N

Assuming the mass of the person is 80 kg 1046000000 N / 80 = 13075000 m/s^2

11200 m/s to escape earth gravity.

So, if a person with gravity manipulation can destroy a house (while assuming they can also protect themself using their gravity manipulation) they can reach the escape velocity in 0.0008565965583 seconds, or 856.596558 nanoseconds, and it will take 27.8173418 seconds to reach the moon.

The fuck is this power? Is my calculation wrong? Am I stupid?

And it get's worst. The speed of light is 299,792,458 meters per second, so it would only take 22.92867748 of acceleration to reach the speed of light?

If this is right, I don't think I can think of a way to write a character that controls gravity when they can become so op.