Two forces act on an object that is on a frictionless surface, as shown below. Rank these situations from most positive change in velocity to most negative change in velocity. All vectors directed to the right are positive and all vectors directed to the left are negative. For the purposes of ranking in this question, positive values > 0 > negative values. If any values are the same, indicate so with an equal (=) sign. For example, if A = 3; B = 2, C = 2; D = 0; E = -2; and F = -2; the correct ranking is A> B = C>D>E = F. F2 = 20 N F1 = 20 N F2 = 10 N F1 = 20 N F2 = 20 N Fi = 40 N A B с m = 10 kg m = 5 kg m = 5 kg F2 = 30 N F1 = 10 N F2 = 20 N F1 = 40 N F2 = 50 N F1 = 20 N D E F m = 10 kg m = 10 kg m = 5 kg Rank from greatest to least:

Newton's law of cooling states that the rate of change in the temperature t(t) of a body is proportional to the difference between the temperature of the medium m(t) and the temperature of the body. that is, startfraction dt over dt endfraction equals upper k left bracket upper m left parenthesis t right parenthesis minus upper t left parenthesis t right parenthesis right bracket , where k is a constant. let kequals0.04 left parenthesis min right parenthesis superscript negative 1 and the temperature of the medium be constant, m(t) font size decreased by 3 equivalent font size decreased by 3 294 kelvins. if the body is initially at 369 kelvins, use euler's method with hequals0.1 min to approximate the temperature of the body after (a) 30 minutes and (b) 60 minutes.