Can gravity be repulsive?

Question

Can gravity be repulsive?

Answer 1

Not that we've ever observed.

Answer 2

Step off the top of a 50 foot building, and I'm sure the people who clean you up off the sidewalk will find gravity VERY repulsive. LOL!

Answer 3

No, sir. Gravity is attraction by definition.

Answer 4

No, the force of gravity is what keeps us grounded. If you throw something up, it has to come down. Gravity does not repel. It only attracts!

Answer 5

scientists are working on GUFT i.e. grand uniform field theory. They are trying to interconvert gravitational, electromagetic, nuclear & van-der-wall forces. By this theory, any force can be converted into any form.  So , gravity can become repulsive.