11:44 PM 17% AT&T; LTE eztest online.com value calculator Trade in Program cinco

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11:44 PM 17% AT&T; LTE eztest online.com value calculator Trade in Program cinco de Mayo-F.. What is manifest d... Apple-os x Yose... ® AT&T; MST 3.0 W3 TEST STTINE mme remaining: 1640 Question A9 of 10 Next is now 11:44 PM you must be finished before 12:48 AM 9. (10In class demonstration, a metallic ball Ais dropped from a height of 15 m. Another steel ball Bis thrown horizontally from the same height with a horizontal velocity of 25 m/s at the same instant. Which ball hits the ground first? ball B Neither ball hits the ground. O More information is needed. O They both hit at the same time. ball A EZ Test Online 00b031) is Copyright 2009 by The McGraw Hill Com nies, Inc Support Terms of Use Privacy Notice The McGraw-Hill Companies

Explanation / Answer

They both hit the floor at the same time.

For both the balls, the parameters for vertical motion are the same i.e

initial speedvertical = 0

distancevertical = 15

accelerationvertical = g = 10

So, 15 = 0 * t + 0.5 * a * t2

Hence, t = 1.732 seconds. This holds true for botht he balls.

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