Air resistance depends on speed because as an object moves faster through the air, it encounters more air molecules per unit of time, resulting in a greater force of air resistance. This force increases with the square of the object's speed, meaning that doubling the speed will result in four times the air resistance. Therefore, the faster an object moves, the greater the air resistance it will experience. **

The speed of a skier without friction and air resistance would be constant and would continue to increase as long as the slope remains constant. This is because there are no forces acting against the skier to slow them down. In this ideal scenario, the skier would continue to accelerate indefinitely. **

No, the air resistance does not double when the speed remains constant. Air resistance is dependent on the speed of the object moving through the air, so if the speed remains constant, the air resistance will also remain constant. However, if the speed were to double, then the air resistance would increase by a factor of four. This is because air resistance is proportional to the square of the speed of the object. **

Yes, it is generally true that the greater the rolling resistance, the lower the maximum speed. Rolling resistance is the force that opposes the motion of a rolling object, such as a car or bicycle, and it is caused by the deformation of the object and the friction between the object and the surface it is rolling on. As rolling resistance increases, more energy is required to overcome it, which can result in a decrease in maximum speed. This is why reducing rolling resistance is a key factor in improving the efficiency and speed of vehicles. **

The air resistance of a car at a speed of 100 km/h depends on various factors such as the car's shape, size, and aerodynamics. Generally, at this speed, the air resistance can be significant and can have a noticeable impact on the car's fuel efficiency and performance. To calculate the exact air resistance, one would need to consider the car's drag coefficient, frontal area, and other aerodynamic factors. **

Those are traffic surveillance cameras. Speed cameras are specifically designed to capture images of vehicles that are exceeding the speed limit, while traffic surveillance cameras are used to monitor traffic flow, detect accidents, and enforce traffic laws in general. These cameras are typically used by law enforcement and transportation agencies to improve safety and traffic management. **

There are concerns and resistance against increased surveillance, even though it could potentially help improve the protection of children, because of worries about privacy invasion and the potential for misuse of the collected data. Many fear that increased surveillance could lead to a loss of personal freedoms and create a culture of constant monitoring. Additionally, there are concerns about the effectiveness of surveillance in actually preventing harm to children, as well as the potential for surveillance to disproportionately target certain groups or communities. **

There are concerns and resistance towards increased surveillance because of fears of invasion of privacy, potential misuse of data, and the creation of a surveillance state. People worry that increased surveillance could lead to a loss of personal freedoms and rights. Additionally, there are concerns about the effectiveness of surveillance in truly protecting children, as it may not address the root causes of issues they face. Overall, the balance between protecting children and safeguarding individual liberties is a complex and contentious issue. **