71) An object is thrown vertically into the air. In this cine air resistance affects motion. Compared with Its time for scent, the time for its descent is A) the same Bj shorter. C longer. Dy need more information 170 The force of gravity does work on a satellite when it is in Aj circular orbit Bj elliptical orbit Cl both of these Of neither of there 13) A projectile that is fired vertically from the surface of Earth at 5 honk will Aj go into an elliptical orbit about Earth. B go into circular about Earth. Go rise and fall back to Earth's surfaces. Dj none of the above 74) Rockets that launch satellites into orbit need less thrust when fired from Aj location does not affect the required rocket thrust. Bj Edwards Air Force Base in California. C Hawall. Dj Cape Canaveral in Florida. 75) Dr. Chuck projectis a ball horizontally from a lab bench. The ball lands on a bullseye marked on the floor a horizontal distance away. Compared to the time for the ball to simply drop vertically from The banch, the time in the air for Dr. Chuck's projected ball is A) gala. By less. the same 76) From Earth, one satellite appears to overtake another. The faster satellite is Aj smaller. Ch higher. Of lower. 17 The kinetic energy of a planet is maximum when it is Aj loved to the Sun 8 kind acelerating C farithat from the Sun. Dj none of the above 78) As soon in a ball rolls off the edge of a table Aj has a aero net force acting on it. 8 it is not acted on by any forces C it is not acted on by any horizontal forces. By none of the above 790 Which would require the greater change in a satellite's orbital speed [: lomis]; slowing down so it crushes into Earth, or speeding up so it escapes Earth? A) speeding up B slowing down C saima each way Dy need more information 30) A dropped ball gains speed beaching A) If nature is to become closer to Earth. Bj of Inertia. C a gravitational force acts on it. Of its velocity changes. #1) A hunter on level ground fires a bullet at an angle of to degrees beer the horizontal while simultancoinly dropping another bullet from the level of the rifle. Which bullet will hit the ground first A) the one fired Bj both hit at the same time. C the one dropped87) An object is dropped and freely falls to the ground with acceleration g. If it is thrown upward at an angle inbead, neglecting air drag, the acceleration along its path will be Aj the same By less than g. C more thing. 830 A projectile is fired into the air at an angle of 50" above ground level and hits a target downrange. It will also hit the target if fired at an angle off E) mone of the above 84) An Earth satellite in close orbit circles Earth in about an hour and a halt How long would a satellite located as far away is the Moon take to orbit Earth? A) has than an hour and a half B) the same hour and a half G about 36 days [Dj ineed more information E) inone of the above #50 The rotational inertia of your lag is greater whon your leg is Aj sima either wary By bani. C straight #8) A veriically-held sledge hammer is easier to balance when the heavier and is Aj at the top, away from your hand. Bj on your hand. C) the same either way BYj if a furniable's rotational speed is doubled, then the linear speed of a pot hamster willing on the edge of the record will Aj halve By remain the same. C double BB) If Earth rotated more slowly about its mais, your weight would Ajba ard. B) increase. Co stary the sarma. Of docremain #90 If Alex witha to rotate his Juteboard, than he must apply a Aj pause before bearing down on the board. Bj rotational maneuver. C lonqua. "0) Stand a broom upright on the end of its pole and lat it topple to the floor. Repeat, but with the brkile: and on the floor. The faster fall will be the broom standing on its Aj pole-and. By the same either way. g brbikes-and "lj A ring and a disk both at inst iroll down a hill together. Which rolls down Aj dick Bi both roll at the same speed C ring [Dj dapands on the makers E) ineed more information