Radial, transverse, normal

When we talk about radial, transverse, and normal, we are talking about different ways things can move. Imagine you have a toy car and you want to move it around.

If you push the car from the center towards the outside in a straight line, that's radial movement. It's like when you push the car from the middle and it moves in a straight line away from you. So, pushing a car from the middle to make it move straight away from you is radial movement.

Now, let's say you take a rope and tie it to the front of the car. You hold the other end of the rope and start moving your hand back and forth. The car moves from side to side and not towards or away from you. That's transverse movement. It's like when you swing a toy car side to side by pulling a rope attached to it.

Lastly, let's imagine you take your toy car and lift it off the ground. You hold it still in the air above the ground. The car is not moving up or down, or side to side, but it's just staying in one place, looking straight ahead. That's called normal movement. It's like when you hold your toy car above the ground without moving it.

So, in summary:

- Radial movement is when something moves straight away from you when you push it from the center outward.
- Transverse movement is when something moves from side to side, like when you swing a toy car by pulling a rope attached to it.
- Normal movement is when something stays in one place without moving up or down, or side to side.