It seems you're asking about how forces from an elastic car, like a toy car made of rubber bands, contribute to its movement. Let's break down how this works:

1. Stored Energy:

* Elastic Potential Energy: When you stretch or compress the rubber bands, you store energy within them. This energy is called elastic potential energy. Think of it like a coiled spring – the more you compress or stretch it, the more energy it stores.

2. Releasing the Energy:

* Release and Force: When you release the stretched rubber bands, they naturally want to return to their original shape. This "want" translates to a force. The rubber bands exert a force that pushes or pulls on the car, causing it to move.

* Direction of Force: The direction of this force depends on how the rubber bands are attached to the car. For example, if the rubber bands are stretched backwards and attached to the back of the car, they will push the car forward.

3. Movement and Friction:

* Motion: The force from the rubber bands overcomes friction (the resistance from the surface the car is moving on) and propels the car forward.

* Decreasing Energy: As the car moves, the rubber bands gradually return to their relaxed state, losing stored energy. This means the force propelling the car weakens, and eventually, the car will slow down and stop.

In Summary:

An elastic car uses the stored energy in its rubber bands to create a force that pushes or pulls the car. The car moves as long as this force overcomes friction, and the car eventually stops when the stored energy is released and the force decreases.