A 10-newton force is applied to a 2-kg block. The block slides across the floor at a constant speed of 5 m/s. What is a valid conclusion from this situation?
A) The force of friction was 10-newtons.
B) The 10-newton force was an unbalanced force.
C) There was no friction experienced by the block.
D) There is a net a force of 10-newtons on the block.

The frictional force will also act on the box. So, we can say that the 10 N force is an unbalanced force.

Explanation:

It is given that, a 10-Newton force is applied to a 2-kg block. The block slides across the floor at a constant speed of 5 m/s.

The block is sliding with a constant speed. This shows the acceleration of the block is zero.

When an object slides that means the force acting on it is unbalanced i.e. the object will move in a particular direction.

b.a device that inputs heat into a cool object