The force of friction on a sliding object is 10 N. The applied force needed to maintain a constant velocity is More than 10 N Less than 10 N 10 N When you stand at rest on a pair of bathroom scales, the reading on each sce Is half your weight Equals your weight Add up to equal your weight Due to inertia, perhaps a railroad train in motion should continue moving indefinitely when its engine is turned off. This is not observed because railroa trains Aren't massive enough Are too heavy Ride on straight tracks Encounter opposing forces

1. The force of friction on a sliding object is 10 N. The applied force needed to maintain a constant velocity is 10 N. When an object is moving at a constant velocity, the net force acting on it is zero. This means that the applied force must be equal in magnitude and opposite in direction to the force of friction. Therefore, the applied force needed to maintain a constant velocity is 10 N.<br /><br />2. When you stand at rest on a pair of bathroom scales, the reading on each scale equals your weight. When you stand on a pair of bathroom scales, the scales measure the force exerted by your body on the scales due to gravity. This force is equal to your weight. Since there are two scales, each scale measures half of your weight, but together they add up to equal your weight.<br /><br />3. Due to inertia, perhaps a railroad train in motion should continue moving indefinitely when its engine is turned off. This is not observed because railroad trains encounter opposing forces. According to Newton's first law of motion, an object in motion will continue moving at a constant velocity unless acted upon by an external force. However, in the real world, there are various forces that act on a moving object, such as friction, air resistance, and other opposing forces. In the case of a railroad train, when its engine is turned off, the train will eventually come to a stop due to the opposing forces acting on it, such as friction between the train and the tracks and air resistance.