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scan0006 - voggenreiter(kv3855 7 HW3 1 Mackie 1(20211 6...

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Unformatted text preview: voggenreiter (kv3855) 7 HW3 1 Mackie 1 (20211) 6 Horizontally, Arr = vat = vi(cos 6)At Given: 6 = 240 v1- : 29.3 m/s Au: 2 65.0 m g = 9.81 III/82 Solution: A3: At 7 v1» (cos 0) 65.0339 In 7 (29.3 m/s) (cos 24") = 2.42964 5 _ viz sin[2 6} 9 _ (29.3 m/s)2 sin[2 (240)] J 9.81 m/s2 = 65.0339 m. 014 (part 2 of 2) 10.0 points ‘0) How high is the tallest spot in the hall’s path? Correct answer: 7.23874 H1. Explanation: Basic Concept: Vertically, ”if 2 “12m — QQAy : vflsin 602 — 29Ay Solution: At maximum height, vyj = 0 rn/s, so 0 : of(sin6)2 — 2gAymax o2 sinf} 2 Aymass : 1(29 ) (29.3 m/s)2(sin 240)2 2(9.81 m/s2) : 7.23874 In 015 (part 1 of 2) 10.0 points A person standing at the edge of a seasirie cliii kicks 3. stone over the edge with a speed of 22 m/s. The cliff is 57 In above the water’s surface, as shown. The acceleration of gravity is 9.81 rn/s2 . 22 m/s Note: Figure not drawn to scale a) How long does it take for the stone to fall to the water? Correct answer: 3.40893 s. Explanation: Basic Concept: Vertically, 1 ‘3 A?) — —§ 9 (A3)“ since 711.31 = 0 In/S. Given: Ag : 157 In 9 : 9.81 ni/s2 Solution: 2 A At = J ’9 i 2(—57 m) i —9.81 rn/s2 = 3.40893 S 016 (part 2 of 2) 10.0 points b) With what speed does the stone strike the ...
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