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Jeopardy May the Force be with You Graph that Thing Conservation The X-Factor Laws The Word Is Q $100 Q $100 Q $100 Q $100 Q $100 Q $200 Q $200 Q $200 Q $200 Q $200 Q $300 Q $300 Q $300 Q $300 Q $300 Q $400 Q $400 Q $400 Q $400 Q $400 Q $500 Q $500 Q $500 Q $500 Q $500 Final Jeopardy $100 Question What law describes why PSY pushes on the ground with the same force (in the opposite direction) that the ground pushes back on him? $100 Answer Newton’s 3rd Law of Motion $200 Question What is the mass of an object that weighs 98 N on Earth? $200 Answer 10 kg $300 Question Which law explains why a person would keep moving through the windshield of their car if they got in an accident and were not wearing a seatbelt? $300 Answer Newton’s 1st Law of Motion $400 Question Unlike mass, which is the measure of inertia, this quantity varies depending on two factors: 1) How massive of an object it is near 2) How far away it is from the object What is the quantity? $400 Answer The gravitational force $500 Question Find the centripetal force that acts on a 50 gram washer being spun horizontally over Ms. Eddy’s head at a rate of 8.5 m/s if the length of the string is 0.9 meters. $500 Answer Fc= 4.01 N $100 Question Find the velocity of the object in the following graph. $100 Answer 10 m/s $200 Question Describe the type of motion in the following graph. $200 Answer Accelerated motion $300 Question What is the acceleration of the object in the following graph? $300 Answer 4 m/s2 $400 Question Force (N) Find the mass of the object in the following graph. 16 14 12 10 8 6 4 2 0 0 1 2 3 4 Acceleration (m/s2) 5 6 $400 Answer 3 kg $500 Question Describe how to find acceleration and displacement from a velocity vs. time graph. $500 Answer Acceleration –slope Displacement –area $100 Question A snowboarder on a half pipe is a perfect example of conservation of energy. What kind of energy is at a maximum in location A? B B A A $100 Answer kinetic energy $200 Question A 0.25 kg baseball is moving at 90 m/s and a 5 kg bowling ball is rolling at 20 m/s. Which ball has a greater amount of kinetic energy? $200 Answer The baseball $300 Question What type of energy is at a maximum for the roller coaster at point W? $300 Answer (gravitational) potential energy $400 Question At which point will the roller coaster move the fastest? X $400 Answer Point X $500 Question What is the speed a 60 kg person at the bottom of a slide if he is initially stationary, the slide is 8 meters high, and there is conservation of mechanical energy? $500 Answer 12.5 m/s $100 Question How much power does an object that does 15 Joules of work in 3 seconds use? $100 Answer 5 Watts $200 Question How long does it take a car to accelerate from 10 m/s to 20 m/s at a rate of 2 m/s2? $200 Answer 5 seconds $300 Question What is the acceleration of the box depicted in the following free body diagram? FN=150 N Fg=150 N $300 Answer 0 m/s2 $400 Question What is the average speed of a car that travels 20,000 meters in 1,000 seconds? $400 Answer 20 m/s $500 Question What is the work required to lift a 9 kg box 4 meters? $500 Answer 353 Joules $100 Question Definition: The sum of all of the forces acting on an object $100 Answer Net Force $200 Question Definition: A quantity that has both magnitude and direction. $200 Answer Vector $300 Question Definition: The tendency of an object to resist change in motion. $300 Answer Inertia $400 Question Definition: The amount of energy transferred by a force moving and object through a distance. $400 Answer Work $500 Question Definition: The sum of kinetic and potential energy. $500 Answer Mechanical Energy Final Jeopardy What is the amount of power that is require to lift a 5 kg object at a rate 2 m/s for 3 seconds? Final Jeopardy Answer 98 Watts