Problem 8 At t=0, A and B are 400 m from each other on a straight line and they start to move toward each other. Suppose at t = 0, A starts from rest and moves toward B with constant acceleration of 2 m/s, while B moves toward A at a constant speed of 4 m/s. What is the distance in meters that A has traveled when the two meet each other? Give you answer in meters to 2 significant figures. D Question 9 1 pts Problem 9 Suppose you throw a tennis ball upward with initial speed of 10 m/s. What is the maximum height (in meters) the ball reaches? Assume that the magnitude of the acceleration of gravity is 10 m/s. Give your answer in meters to 1 significant figure.