If a wheeled vehicle is neither braking nor accelerating, then there is negligible friction. Technically there is a "rolling resistance", which may be also small, and explains why rolling is so efficient. An object, wheel or ball, rolling on a smooth surfaces slows down gradually. Whereas, a flat object sliding on a surface tends to slow down under friction.Mohamad said:Summary: Is there any friction force when we drive at a constant velocity?
Suppose we are driving on moon (I mean there is not air resistance) at a constant velocity. Suddenly the car goes on an icy land (the friction is zero). What happens?
In other words, if we drive at constant velocity and there isn't air resistance, Is there any friction force between tires and road? If yes, why?
The answer is in your premise.Mohamad said:...(the friction is zero)...Is there any friction ...
No, I only asked my question in two ways. Is there any friction force? and if no, so the car continues its straight route with no problem on an icy land.A.T. said:The answer is in your premise.
Mohamad said:In other words, if we drive at constant velocity and there isn't air resistance, Is there any friction force between tires and road? If yes, why?
Are there any differences between a ball and the tire of a car, whereas the tires of car get their force from the engine?PeroK said:An object, wheel or ball, rolling on a smooth surfaces slows down gradually.
Has the friction force the same direction as the car moving or is in the opposite?Mister T said:Yes. At the place where the tire makes contact with road there is deformation of both the tire and the road.
You can work this out for yourself by considering that a car coasting without power will eventually come to a stop. Because it is coasting without power the only force acting on it will be friction (both rolling resistance and air resistance are forms of friction).Mohamad said:Has the friction force the same direction as the car moving or is in the opposite?
The moon has no atmosphere, which means there is no air resistance to slow down objects in motion. This allows for objects, such as a vehicle, to maintain a constant velocity without any external forces acting upon it.
Zero friction on the moon allows for objects to move at a constant velocity without the need for a continuous external force. This can be beneficial for transportation and exploration on the moon, as it requires less energy and resources to maintain constant motion.
Without air resistance, vehicles on the moon will not experience drag or resistance when turning or changing direction. This can make handling and maneuvering easier and more precise compared to driving on Earth.
No, objects on the moon cannot reach infinite velocity due to the moon's gravity. While there is no air resistance, there is still gravity present, which will eventually limit the speed of an object in motion.
Driving on the moon with zero friction is significantly different from driving on Earth. Without air resistance, the vehicle will not experience any drag or resistance, making it easier to maintain a constant velocity. However, the lack of air resistance also means that braking and stopping will require different techniques compared to driving on Earth.