i believe u search for the momentum transfer.
its a formula with mass and velocity.
then acceleration result in force.
force = mass * acceleration
F = m * a
if you can not move between 2 objects its friction.
GetSpriteContactSpriteID2 ( )
GetSpriteContactWorldX ( )
GetSpriteContactWorldY ( )
GetSpriteFirstContact ( iSprite1 )
GetSpriteNextContact ( )
GetPhysicsCollision ( iSprite1, iSprite2 )
GetPhysicsCollisionWorldX ( )
GetPhysicsCollisionWorldY ( )
GetPhysicsCollisionX ( )
GetPhysicsCollisionY ( )
GetSpritePhysicsVelocityX ( iSpriteIndex )
GetSpritePhysicsVelocityY ( iSpriteIndex )
GetSpritePhysicsMass ( iSpriteIndex )
SetSpritePhysicsMass ( iSpriteIndex, mass )
AGK 108 (B)19 : Windows 8.1 Pro 64 Bit : AMD Radeon HD 6670