pp06 - PHYSICS: A World View Tuesday, 1 February READ Ch 3...

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Unformatted text preview: PHYSICS: A World View Tuesday, 1 February READ Ch 3 (pp 41-47) ; PS 3: 2-4 PRAC Ch 3: Q 3, 7, 9; E 1, 3; P 3 HW #6 Ch 3: Q 2, 6; E 2, 4 Th 3 Jan ANNOUNCEMENTS Quiz on Thursday Chs 1 - 2 Labs 2 - 3 Problem: You and a friend stand on the edge of a 40 m cliff. You throw a red ball straight up at 30 m/s. At the same time, your friend throws a blue ball straight down at the same speed. Compare the velocities of the two balls right before they hit the ground. How much later does the red ball hit than the blue ball? Which ball is traveling the fastest right before hitting the ground? 1 2 3 0% 0% 0% 1. Red ball 2. Blue ball 3. Both the same 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 30 m/s 20 m/s 1 sec 10 m/s 2 sec 0 m/s 3 sec 0 m/s 3 sec 4 sec 10 m/s 5 sec 20 m/s 6 sec 30 m/s 0 m/s 3 sec 30 m/s y = ? What is the acceleration of the ball at the very top of its path ? 1 2 3 0% 0% 0% 1. zero 2. 5 m/s 2 3. 10 m/s 2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123...
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This document was uploaded on 10/29/2011 for the course PHSX 103 at MSU Bozeman.

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pp06 - PHYSICS: A World View Tuesday, 1 February READ Ch 3...

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