\f2. A baseball is thrown straight downward with an initial Speed of 40 feet per second from the top of the Washington Monument (555 feet tall}. Given this information: a) How much time will it take for the baseball to reach the ground, with answer accurate to two decimal places (5 points}. b) What with speed does the baseball strike the ground, with answer accurate to We decimal places {4 points). 3. Use the Wroskt'an to show that the following three mctions are lineal-{w independent for all nonzero real numbers at (5 points}: f(x) = x g(x) = xe" Mr) = xze"