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Why is the net force acting on a body moving on a rough surface at constant velocity different from zero?
a. zero b. a balance force c. an unbalance force d. none of these?
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Why is the net force acting on a body moving on a rough surface at con...
Net Force Acting on a Body Moving on a Rough Surface at Constant Velocity
There are several key factors that contribute to the net force acting on a body moving on a rough surface at constant velocity:

Frictional Force
- When an object is moving on a rough surface, there is a frictional force acting in the opposite direction of motion.
- This frictional force is necessary to overcome the resistance of the rough surface and keep the object in motion.

Applied Force
- In order to maintain a constant velocity on the rough surface, an external force must be applied to counteract the frictional force.
- This applied force is equal in magnitude but opposite in direction to the frictional force.

Net Force
- The net force acting on the object is the vector sum of the applied force and the frictional force.
- Even though the object is moving at a constant velocity, the net force is not zero because the applied force and frictional force are equal and opposite, resulting in a non-zero net force.
Therefore, the net force acting on a body moving on a rough surface at constant velocity is not zero but rather a balance of forces between the applied force and the frictional force.
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Why is the net force acting on a body moving on a rough surface at constant velocity different from zero?a. zero b. a balance force c. an unbalance force d. none of these?
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