This question already has an answer here:
Let say we have 2 similar apples separated by a distance apart, just their mass energy alone is sufficient to cause bending in the space-time. I think it is this bending in the space-time that cause both the apples to accelerate but there shouldn't be any external forces to induce the acceleration, I've skimmed at the math it just says no bending no acceleration and that's not helping. I like to understand how bending in space-time cause the apple to accelerate?
okay I know the math shows that time is a vector(or scalar or even tensor*) too but that makes the matter even worst for me!
*just want to insured myself!