"Toy Car A" is propelled by elastic force. The other forces acting on the car are gravity (pulling the car down) and friction force (between the car and the floor). What UNBALANCED forces are acting on the car?


"Toy Car B" is propelled by air resistance. The other forces acting on the car are also gravity and friction force. What BALANCED forces are acting on the car?

For "Toy Car A," the unbalanced forces acting on the car are the elastic force and gravity. The elastic force is pushing the car forward, while gravity is pulling it down. The friction force, although present, is balanced and does not cause any net acceleration.

For "Toy Car B," the balanced forces acting on the car are gravity, friction force, and air resistance. Gravity pulls the car down, friction opposes the motion on the ground, and air resistance opposes the forward motion of the car. The forces of air resistance and friction act in opposite directions to each other, balancing out any net acceleration.

To identify the unbalanced and balanced forces acting on each toy car, we need to understand the concept of balanced and unbalanced forces.

1. Toy Car A:
The unbalanced forces on Toy Car A refer to forces that are not equal or cancel each other out. In this case:
- The elastic force is the force propelling the car forward.
- Gravity is the force pulling the car down towards the ground.
- Friction force is the resistance between the car's wheels and the floor.

Since the elastic force is the only force propelling the car forward, it is unbalanced because it is not counteracted by any other force. Therefore, the unbalanced force acting on Toy Car A is the elastic force.

2. Toy Car B:
The balanced forces on Toy Car B refer to forces that are equal or cancel each other out. In this case:
- Air resistance is the force acting in the opposite direction of the car's motion due to the movement through the air.
- Gravity is the force pulling the car down towards the ground.
- Friction force is the resistance between the car's wheels and the floor.

When Toy Car B is propelled by air resistance, it means that the air resistance force is acting in the opposite direction of the car's motion. This force balances out the force propelling the car forward, resulting in a net force of zero. Hence, the balanced forces acting on Toy Car B are the air resistance force and the force propelling the car forward.

In summary:
- Unbalanced force on Toy Car A: Elastic force.
- Balanced forces on Toy Car B: Air resistance force and the force propelling the car forward.