1. Two balls are thrown off a building with the same speed, one straight up and one at a 45° angle. Which statement is true if air resistance can be ignored?
(a) Both hit the ground at the same time.
(b) Both hit the ground with the same speed.
(c) The one thrown at an angle hits the ground with a lower speed.
(d) The one thrown at an angle hits the ground with a higher speed.
(e) Both (a) and (b).
2. A skier starts from rest at the top of each of the hills shown in Fig. 6-34. On which hill will the skier have the highest speed at the bottom if we ignore friction?
(a), (b), (c), (d), or (e) c and d equally?

(a) (b) (c) (d)