Question

A friend tells you that since his car is at rest, there are no forces acting on it. How would you reply?

Answer 1

I would reply that even though the car is at rest, there are still several forces acting on it. These forces include the force of gravity, which is pulling the car downwards, and the force of the ground, which is pushing upwards on the car. Additionally, there may be other forces such as air resistance, friction between the tires and the road, or the weight of any objects inside the car. So, there are indeed forces acting on the car even when it's at rest.