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sonar is used to determine the speed of an object a 40-khz signalis sent out and a 42-khz signal is returned assume the
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bruce stands on a bank beside a pond grasps the end of a 200m long rope attached to a nearby tree and swings out to
a point source of light is submerged 28 mbelow the surface of a lake and emits rays in all directions on the surface of
a rock is kicked horizontally at a speed of 10 ms from the egde of a cliff the rock strikes the ground 55 m from the
a 12kg box is released from the top of an incline that is 5mlong and makes an angle of 40degrees to the horizontal a
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a simple ppendulum of length 25m makes 50 complete swings in 16swhat is the acceleration of gravity at the location of
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a roller coaster at the top of a 390 m high vertical loop istraveling 138 ms find the maximum speed of the cars as they
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