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Unformatted text preview: homework 02 – ALIBHAI, ZAHID 1 Latest unpenalized work: Jan 29 2007 Mon- day 04:00 (after this date you can not make a perfect score). Work cutoff: Jan 31 2007, 4:00 am. Question 1 part 1 of 2 10 points The tallest volcano in the solar system is the 32 km tall Martian volcano, Olympus Mons. Assume: An astronaut drops a ball off the rim of the crater and that the free fall acceler- ation of the ball remains constant throughout the ball’s 32 km fall at a value of 2 . 7 m / s 2 . (We assume that the crater is as deep as the volcano is tall, which is not usually the case in nature.) a) Find the time for the ball to reach the crater floor. Answer in units of s. Question 2 part 2 of 2 10 points b) Find the magnitude of the velocity with which the ball hits the crater floor. Answer in units of m / s. Question 3 part 1 of 2 10 points A ball is thrown upward. After reaching a maximum height, it continues falling back towards Earth. On the way down, the ball is caught at the same height at which it was thrown upward. Neglect: Air resistance. The acceleration of gravity is 9 . 8 m / s 2 . Its initial vertical speed v , acceleration of gravity g , and maximum height h max are shown in the figure below. b b b b b b b b b bb b b b b b b b b b v 9 . 8m / s 2 h max If the time ( up and down ) the ball remains in the air is t , calculate its speed v f when it caught. 1. v f = 2 g t 2. v f = √ 2 g t 3. v f = 1 √ 2 g t 4. v f = g t 5. v f = 1 4 g t 6. v f = 1 2 g t 7. v f = 4 g t Question 4 part 2 of 2 10 points If the time the ball remains in the air is t , calculate the maximum height h max the ball attained while in the air....
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This note was uploaded on 10/13/2009 for the course PHY 303K taught by Professor Turner during the Spring '08 term at University of Texas.
- Spring '08