question_answer

A 15 kg mass is accelerated from rest with a force of 100 N. As it moves faster, friction and air resistance create an appositively directed retarding force given by \[{{F}_{R}}=A+{{B}_{V}}\], where A = 25 N and B = 0.5 N/m/s. At what velocity (in m/s) does the acceleration equal to one half of the initial acceleration?

Answer:

75.00