Astudent pushes a 40-n block across the floor for a distance of 10 m how much work was done to move the block

w = 400 joules

Explanation:

Work done is the force that causes the displacement of an object. Work done is the product of force and distance. A force acting on an object is only regarded as a work done if the object has an appreciable displacement.

Mathematically,

Work = force × distance

force = 40 Newton

distance = 10 m

W = 40 × 10

w = 400 joules

answer; i believe the correct answer to the above question is ( friction)

the law of original horizontality explains:   why rocks appear in layers. correct answer: b the law suggests that all rock layers are originally laid down (deposited) horizontally and can later be deformed.   the principle is used by geologists to make assumptions about the relative ages of sedimentary rocks.