Disregarding friction, the net force on a car during circular motion is equal to the product of its mass and the square of its velocity, divided by the distance from the center of the circle to the car (the radius). This is also equivalent to the car's centripetal acceleration.
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Since there is zero acceleration, the net force is also zero.
Since the car is traveling at a constant speed, the net force on the car is zero. The forces acting on the car (like friction, air resistance, and engine force) are balanced to maintain the steady speed without acceleration.
An example of a net force is when a car is accelerating. The net force on the car is the combined effect of all forces acting on it, such as the force produced by the engine and the force of friction. This net force causes the car to change its speed or direction.
The term "steady speed" indicates a constant velocity. This implies that there is no net acceleration, and thus no net force. Any net force on a moving object will cause a change in velocity, as per Newton's First and Second Laws.
The net force on the car acts on the line between the center of the car and the center of the circle. Its strength depends on the size of the circle and the speed of the car.
If the car is moving at a constant velocity, the net external force acting on it is zero. This is because the forces acting on the car (such as friction and air resistance) are balanced by the force applied by the engine to maintain the constant speed and direction.
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1. force that moves a car forward is the friction force between the tires and the road (ignoring what is going on mechanically in the car) 2. if the car is travelling at constant velocity, net force is zero - forces pushing car forward are equal to forces pushing car back
When a car is stopped at a stop sign, the net force on the car is zero because no motion is occurring. When a car is moving in a straight line with constant speed, the net force on the car is also zero because the forces acting on the car (like air resistance and friction) are balanced by the force generated by the car's engine.
The net force is directed toward the center of the circular path that the object is moving along, and it has a magnitude equal to the velocity squared times mass divided by the radius of the path. (mv^2/r)
If the velocity of the object is constant, then the net force on it is zero.(Incidentally, if the velocity of the car is constant and not zero, then it must be ona straight highway. If the highway curved and the car's velocity didn't change, thenit would run off of the road.)