4. [-/6 Points] DETAILS OSCOLPHYS2016ACC 3.2.P.004. Suppose you walk 18.0 m straight west and then 25.0 m straight north. (If you represent the two legs of the walk as vector displacements A and B, as in the figure below, then this problem asks you to find their sum R = A + B.) A + B = R R B N+ A How far, in meters, are you from your starting point? (Enter a number.) m E What is the compass direction of a line connecting your starting point to your final position measured in degrees west of north? (Enter a number.) MY NO 5. [-/7 Points] DETAILS OSCOLPHYS2016ACC 3.4.P.026. A ball is kicked with an initial velocity of 23 m/s in the horizontal direction and 11 m/s in the vertical direction. (Assume the ball is kicked from the ground. For each answer, enter a number.) (a) At what speed (in m/s) does the ball hit the ground? m/s (b) For how long (in s) does the ball remain in the air? S (c) What maximum height (in m) is attained by the ball? m 6. [-/7 Points] DETAILS OSCOLPHYS2016ACC 3.5.P.054. Near the end of a marathon race, the first two runners are separated by a distance of 45.0 m. The front runner has a velocity of 3.50 m/s, and the second a velocity of 4.25 m/s. (a) What is the velocity of the second runner relative to the first? (Enter a number. Enter your answer in m/s faster than the front runner.) m/s faster than the front runner (b) If the front runner is 250 m from the finish line, who will win the race, assuming they run at constant velocity? The second runner will win. The first runner will win. (c) What distance (in m) ahead will the winner be when she crosses the finish line? (Enter a number.) m