Question

The following 3 questions pertain to this para- graph. An airplane fl level ground at a constant welocity of 150 m/s drops a heavy ground 4 Two balls are realeased at the same time from other is given a horizontal velocity. Both balls ying level 2400-m above the the same height. One is released from rest, down to the level ground below. (a) The two balls land on the ground at the same (b) More information is needed. of supplies to someone on the fall down to the level ground below. time. 1 While the box is falling, which of the following is true about its acceleration? (e) The ball with the horizontal velocity reaches the ground last. (d) The ball with the horizontal velocity reaches (b) a 0,ay 0 (c) a,-0, av#0 (d) a, 0, av=0 the ground first. 5 A ball is launched straight upward with an ini tial speed of 22 m/s. How high is it 1.8 seconds later? (a) 24 m 2 How far does the box travel horizontally before(b) 48 m hitting the ground? (c) 31 m (d) 55 m (a) 2300 m (b) 73,000 m (c) 3300 m (d) 16,000 m 3 While the box is falling, which of the following is true about the airplane's acceleration? (a) a, 0, av=0 (b) a,-0, a,-0 (d) at 0, av#0

Answer 1

9. 9 に33 19.7m2 23300m (e)