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12. [-/0.52 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER An astronaut orbiting the Earth is preparing to dock with a Westar VI satellite. The satellite is in a circular orbit 700 km above the Earth's surface, where the free-fall acceleration is 8.20 m/s2. Take the radius of the Earth as 6400 km. Determine the speed of the satellite. m/s Determine the time interval required to complete one orbit around the Earth, which is the period of the satellite. min Need Help? Read it 13. [-/0.52 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER This figure (la| = 18.5 m/s2) represents the total acceleration of a particle moving clockwise in a circle of radius r = 4.10 m at a certain instant of time. (a) For that instant, find the radial acceleration of the particle. m/$2 (toward the center) (b) For that instant, find the speed of the particle. m/s (c) For that instant, find its tangential acceleration. m/s2 (in the direction of the motion) Need Help? Read It Watch It 14. [-/0.52 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER (a) Can a particle moving with instantaneous speed 8.00 m/s on a path with radius of curvature 5.00 m have an acceleration of magnitude 17.00 m/s?? Yes O No If the answer is yes, explain how it can happen; if the answer is no, explain why not. This answer has not been graded yet. (b) Can it have an acceleration of magnitude 6.00 m/s?? Yes No If the answer is yes, explain how it can happen; if the answer is no, explain why not.A farm truck moves due east with a constant velocity of 10.00 m/s on a limitless horizontal stretch of road. A boy riding on the back of the truck throws a can of soda upward (see figure) and catches the projectile at the same location on the truck bed, but 12.0 m farther down the road. (a) In the frame of reference of the truck, at what angle to the vertical does the boy throw the can? (b) What is the initial speed of the can relative to the truck? m/s (c) What is the shape of the can's trajectory as seen by the boy? O a symmetric section of a parabola opening downward O a straight line segment upward and then downward An observer on the ground watches the boy throw the can and catch it. (d) In this observer's frame of reference, describe the shape of the can's path. O a straight line segment upward and then downward O a symmetric section of a parabola opening downward (e) In this observer's frame of reference, determine the initial velocity of the can. magnitude m/s direction above the horizontal Need Help? Read It 16. [-/0.52 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER NASA's KC-135 Reduced Gravity Research aircraft, affectionately known as the "Vomit Comet," is used in training astronauts and testing equipment for microgravity environments. During a typical mission, the aircraft makes approximately 30 to 40 parabolic arcs. During each arc, the aircraft and objects inside it are in free-fall, and passengers float freely in apparent "weightlessness." The figure below shows the altitude of the aircraft during a typical mission. It climbs from 24,000 ft to 30,600 ft, where it begins a parabolic arc with a velocity of 150 m/s at 45.0 nose-high and exits with velocity 150 m/s at 45.0 nose-low. 31 000 - 45 nose high 15 nose low 24 000 Zero g 65 Maneuver time (s) (a) What is the aircraft's speed (in m/s) at the top of the parabolic arc? m/'s (b) What is the aircraft's altitude (in ft) at the top of the parabolic arc? ft (c) What is the time (in s) spent in microgravity?The B-24 Liberator was a bomber aircraft used by the US Army Air Force during World War II. A B-24 flies over level ground at a speed of 101 m/s (with respect to the ground) and maintains an altitude of 2.73 km above the ground when it releases a single bomb. (a) Find the horizontal distance (in m) the bomb travels from the point of release to the point where it hits its target at ground level. Ignore the effects of air resistance. m (b) If the B-24 maintains a constant course, altitude, and speed while the bomb is falling, where will it be when the bomb hits the target? O directly above the bomb O ahead of the bomb behind the bomb (c) Bombardiers in these aircraft used telescopic bombsight that allowed them to calculate the time of release. If the bombsight was directly viewing the target at the instant the bomb was released, what was the angle (in degrees) between the vertical (directly downward) and the viewing direction of the bombsight? . from vertical Need Help? Read It 18. [-/0.52 Points] DETAILS MY NOTES ASK YOUR TEACHER A boy throws a stone horizontally from the top of a cliff of height h toward the ocean below. The stone strikes the ocean at distance d from the base of the cliff. In terms of h, d, and g, find expressions for the following. (a) the time t at which the stone lands in the ocean t = (b) the initial speed of the stone Vi = (c) the speed of the stone immediately before it reaches the ocean VF= (d) the direction of the stone's velocity immediately before it reaches the ocean OF = below the horizontal Need Help? Read It 19. [-/0.64 Points] DETAILS MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER ier leaves the ramp of a ski jump with a velocity of v = 26.0 m/s at 0 = 18.0 above the horizontal, as shown in the figure. slope where she will land is inclined downward at