What is the far point of a person whose eyes have a relaxed power of 50.5 D? (Eye lens to retina distance is 2.00 cm)

Can somebody explain to me how newton's 3rd law relates to momentum? ~ap physics 1

The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively

Which of the following is an example of units for speed