A student wants to drag a box of books across the floor to his room, which is 2 m from where he is standing. If he applies a force of 300 N at an angle of 30° to the horizontal, how much force actually does work to move the box?
-150 N
-300 N
-0 N
-260 N

total distance travelled = 60 miles

total time taken =1.5 hours

average speed = total distance / total time

60 / 1.5

= 40

therefore, average speed = 40 m/h

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i don't understand. explain it clearly

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .

conservation of mass

mass before something happens = mass afterwards