The velocity v of a falling parachutist is given by   c m t e c gm v ( ) 1    Where g  9.81 m/s2 . For a parachutist with a drag coefficient c  15 kg/s. compute the mass m so that the velocity v  36 m/s at time t  10 sec. Use the Secant and Newton’s Raphson methods to determine m to a level of εs  0.1%.