Thursday, January 3, 2019
English Channel and Resultant Displacement
An ostrich bottom of the inningnot fly, but it is competent to run fast. Suppose an ostrich runs eastboundern hemisphere for 7. 985 s and then runs 161 m south, so that the order of magnitude of the ostrichs accompanying excision is 226 m. estimate the magnitude of the ostrichs eastward component and its run look sharp to the east. 1. Kangaroos can easily tolerate as far as 8. 0 m. If a kangaroo makes five such commencements westward, how many an(prenominal) rises must it make northward to acquire a northwest displacement with magnitude of 68 m? What is the angle of the effect displacement with respect to north? . In 1926, Gertrude Ederle of the United States became the first woman to drift across the English Channel. Suppose Ederle swam 25. 2 km east from the coast respectable Dover, England, then made a 90o overthrow and traveled south for 21. 3 km to a point east of Calais, France. What was Ederles resultant displacement? 3. Cheetahs are, for short distances, th e express land animals. In the course of a chase, cheetahs can also change manner very chop-chop. Suppose a cheetah runs sequential north for 5. 0 s, quickly turns and runs 3. 0 x 102 m west. If the magnitude of the cheetahs resultant displacement is 3. 35 x 102 m, what is the cheetahs displacement and velocity during the first bulge out of its run? 4. The largest variety of ground ball in the world is found in Malaysia. These grasshoppers can measure almost a buttocks in length and can jump 4. 5m. Suppose one of these grasshoppers starts at the showtime of a coordinate system and makes scarce eight jumps in a straight line that makes and angle of 35o with the positive x-axis.Find the grasshoppers displacements along the x and y axes. 5. The landing speed of the space skirt Atlantis is 347 km/h. If the shuttle is landing at an angle of 15. 0o with respect to the run down, what are the horizontal and vertical components of its velocity? 6. The fastest propeller-driven ai rcraft is the Russian TU-95/142, which can reach a maximum speed of 925 km/h. For this speed, calculate the planes resultant displacement if it travels east for 1. 50 h, then turns north and travels for 2. 00 h. 7.The longitudinal taw in a golf game tournament was made by microphone Austin in 1974. The ball went a distance of 471 m. Suppose the ball was shot horizontally off a free fall at 80. 0 m/s. Calculate the height of the lessening. 8. What would be the initial speed of a projectile that is launched from a cliff 210 m high and hits the ground 420 m away from the cliff? 10. The worlds largest pot is 1. 95 m high. If you were to jump horizontally from the top edge of this flowerpot at a speed of 3. 0 m/s, what would your landing speed be?
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