Mark drags his little brother in a sled as shown in the drawing to the right. In this case, two agents do work: Mark and friction. Consider each of the following situations separately: (Mass = 40 Kg)
一月 F
40.0 kg
A. How much net work (total work done by Mark and friction) must be done to increase the sled's speed from 2.00 m/s to
4.00m/s?
B. Increasing the sled's speed from 4.00 m/s to 6.00 m/s, Mark does +500 J of work. How much work did friction do?

momentum of soft ball three times less than baskey ball

the closer the planet is to the sun, the larger the gravity

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 .

the awnser is d you right bro