Instead nick hands the rope with the scale to his friend barney, who stands on the ground. barney pulls on the rope so that the spring scale again reads 320 n. what is nick's acceleration now, again using upward as positive.

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

Work out sian speed for the first 30 minutes of her journey. give your answer in km/h.

Road users moving into your lane, brake lights, and abrupt changes in road surface are a. rare at night b. indicators of potential hazards c. not worth worrying about before you reach them d. no problem for experienced drivers