A box being pushed with a force of 85N slides along the floor with a constant speed. What is the force of sliding friction on the box?

Well, you know what they say about boxes and friction...they really rub each other the wrong way! In this case, since the box is moving with a constant speed, we can conclude that the force applied (85N) and the force of sliding friction are balanced.

So, the force of sliding friction on the box would also be a whopping 85N. It seems like the box and friction have finally come to a truce!

To find the force of sliding friction on the box, we need to use the concept of Newton's second law of motion, which states that the net force acting on an object is equal to the product of its mass and acceleration. In this case, since the box is moving at a constant speed, we know that the net force acting on it is zero.

The force of sliding friction is equal in magnitude but opposite in direction to the applied force, which in this case is the pushing force of 85N. Therefore, the force of sliding friction must be 85N, but in the opposite direction of the applied force.

To find the force of sliding friction on the box, we need to use Newton's first law of motion, which states that an object at a constant velocity experiences a net force of zero.

In this case, the box is being pushed with a force of 85N and is sliding along the floor at a constant speed. Since the velocity is constant, the net force on the box must be zero.

The force of sliding friction acts in the opposite direction to the applied force and is equal in magnitude, but opposite in direction. Therefore, the force of sliding friction on the box would be equal to 85N, but in the opposite direction.

To summarize, the force of sliding friction on the box would be 85N in the opposite direction to the applied force.

The friction force must be -85 N (backwards)so that the resultant force is zero, since the box is not accelerating.