Do 39-56. Show all work please. Thank you! :)

Chapter 4 . Review Exercises 375 40. Free Fall Two objects begin a free fall from rest at the same height I second apart. How long after the first object begins to fall will the two objects be 10 m apart? In Problems 41-44, determine if the expression is an indeterminate form at 0 . If it is, identify its type. 41. xex - x (C) (D) 1 - cos(2x) 42. ( 1 ) lan 43. r2 Graph a function f that has the following properties: x2 sec x 44, tan x - x x - sin x 1( - 3 ) = 2; 5(- 1) =- 5; f(2) =-4; In Problems 45-56, find each limit. ((6) = -1 f' (-3) = f'(6) =0 45. lim sec z x -n/2 sec2 (3x) 46. lim 2 lim f ( x ) = -0o; lim f (x ) =0o; x-0 sin2 x 1 - cos x 47. lim mer - ex ("(x) > 0ifx 0if x Oifx 0, with an acceleration a(1) =12(1 - 3) cm/$2. 10 cm and (0, y), y