Inertial Vectors

If you push on something perpendicularly to the direction it is moving the resulting direction of travel will depend on the momentum before the push and the force of the push. Some would call the momentum a "desire" to maintain the status quo. Some would call the experience of a push-back from that something a "resistance" to change. No matter how hard you push, a perfect right angle (or left angle) turn is unachievable without first stopping it completely. If you push too hard you might break it. Maybe lots of little pushes would be more effective than one big one.