Answer Happy

1. A ball is thrown upward with an initial velocity of 15 m/s. (3 pts) a. How far high will the ball go? (1 pt) b. How long will it take for the ball to return to the point of release? (1 pt) c. What is the ball's total displacement? How far did it travel? (1 pt) 2. The Grand Canyon in Arizona averages 10 miles across, 277 miles in length and over 1 mile deep. Much of the area is a national park having been carved out of the earth by the Colorado River over the past 5-6 million years. Wile E Coyote Super Genius shoots himself up into the air at 33.5ft/s just over the cliff's edge. Assume that he travels to the deepest part of the Grand Canyon, 6001 feet below in a vacuum ... not realistic but neither is Wile E Coyote. ( 7pts ) a. What is Wile E's displacement? (1 pt) b. What is his velocity just before impact? (1 pt) c. Plot the d vs t curve for Wile E? (1 pt) d. How long does it take before Wile E goes splat? (2 pts) e. Aside from being a cartoon character, why is the answer unrealistic? (2 pts) 3. Extra credit: 2 points In problem 2, assume that Wile E Coyote accelerates with constant acceleration until he reaches terminal velocity (200 km/h) : a. At what time (t) or height (y) does Wile E Coyote reach terminal velocity? How long does it take before Wile E goes splat now?