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Problem 12.87 The catapult is used to launch a ball such that it strikes the wall of the building at the maximum height of its trajectory. It takes 3.1 s to

travel from A to B. 3.5 ft Part A Determine the speed at which it was launched. Express your answer to three significant figures and include the appropriate units. ANSWER: VA= 18 ft/nPart B Determine the angle of release 0. Express your answer in degrees to three significant figures. ANSWER: 0=/nPart C Determine the height h. Express your answer to three significant figures and include the appropriate units. ANSWER: h=

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