A 4.3 m long plank with a weight of 164 N is placed on a dock with 1.4 m of its length extended over the water. The plank is uniform in density. A boy with a weight of 141 N is standing on the plank and moving out slowly from the edge of the dock. How far from the edge of the dock can the boy move until the plank is just on the verge of tipping

Ablue car pulls away from a red stop-light just after it has turned green with a constant acceleration of 0.5 m/s 2 . a green car arrives at the position of the stop-light 6.5 s after the light had turned green. if t = 0 when the light turns green, at what time does the green car catch the blue car if the green car maintains the slowest constant speed necessary to catch up to the blue car? answer in units of s.