Transcript project-8c
IS Jeopardy Work Power Energy Misc Potpourri 100 100 100 100 100 200 200 200 200 200 300 300 300 300 300 400 400 400 400 400 500 500 500 500 500 Final Jeopardy Work -100 • ANSWER: These are the units used to measure work and one of the equations for work. • QUESTION: What is Joules and W=Fd? Work -200 • ANSWER: A weightlifter applies a force of 45 N to a 90 kg weight and it doesn’t move. Calculate the work doen by the weightlifter on the weight. • QUESTION: What is 0 J? Work -300 • ANSWER: This is the equation that relates work to Kinetic energy • QUESTION: What W = KEfinal – KE initial? Work -400 • ANSWER: These make work easier to do by manipulating the equation. • QUESTION: What are simple machines? Work -500 • ANSWER: If the force is doubled, the work is _______________ • QUESTION: What is doubled? Power - 100 • ANSWER: These are the units used to measure power. • QUESTION: What are watts? Power -200 • ANSWER: If 40 J of work are done in 4 seconds, how much power was produced? • QUESTION: What is 10 Watts? Power -300 • ANSWER: If I can carry four textbooks upstairs in 1 minute and you can do the same in 35 seconds, • you do more work on the books than I do. • you have more power than I. • both a and b • none of the above • QUESTION: What is b? Power -400 • ANSWER: A 12 kg Buddha statue is lifted to a 3 m high shelf in 6 seconds. This is the amount of power output. • QUESTION: What is 60 Watts? Power -500 • ANSWER: A 5 kg rock is lifted 2 meters in 5 seconds. Calculate the power used to lift the rock. • QUESTION: What is 2 Watts? Energy -100 • ANSWER: This is the equation for Kinetic energy. • QUESTION: What is ½ mv^2? Energy -200 • ANSWER: A ball is thrown upward with an initial velocity of 3 m/s. At what point does the ball have the greatest amount of potential energy? • QUESTION: What is at the top of the arc? Energy -300 • ANSWER: Two divers of the same mass are standing on the 10 m and 3 m boards respectively. This is the kind of energy they have and who has more of it. • QUESTION: What is potential energy (gravitational) and the higher diver? Energy -400 • ANSWER: As you ride on Nitro (the rollercoaster at Great Adventure), • A) your potential energy is transformed into kinetic energy as you fall • B) your kinetic energy is transformed into potential energy as you rise • C) at the lowest part of the coaster, your kinetic energy is at a maximum. • D) at the highest point of the coaster, your potential energy is at a maximum. • E) all of the above • QUESTION: What is E? Energy -500 • ANSWER: Suppose a moving car has 4000 J of kinetic energy. If the car’s speed doubles, how much kinetic energy would it then have? • QUESTION: What is 16000 Joules? Misc -100 • ANSWER: What does the law of conservation of energy state? • QUESTION: TE = KE + PE? Misc -200 • ANSWER: This is how an inclined plane makes work “easier” • QUESTION: What is by increasing the distance and therefore decreasing the force? Misc -300 • ANSWER: A machine that is made of two or more simple machines is called this. • QUESTION: What is a compound machine? Misc -400 • ANSWER: This man is known for his cartoons of complicated machines to do a simple task • QUESTION: Who is Rube Goldberg? Misc -500 • ANSWER: These are the six types of simple machines • QUESTION: What are lever, pulley, inclined plane, wedge, screw and wheel and axle? Potpourri -100 • ANSWER: Name a vector and a scalar quantity. • QUESTION: What is ? Potpourri -200 • ANSWER: Without air resistance, would a feather or a rock land first if they are both dropped from the same height? WHY? • QUESTION: They would both land at the same time because the acceleration due to gravity is constant. Potpourri -300 • ANSWER: When this happens total mechanical energy does not remain constant. • QUESTION: What is friction? Potpourri -400 • ANSWER: This is the efficiency of a machine that needs 100 J to lift a box that weighs 20 N five meters straight up. • QUESTION: What is 100%? Potpourri -500 • ANSWER: Besides the Big Bang theory, these are the two less supported theories about the origin of the universe. • QUESTION: The steady state theory and the pulsating theory. FINAL JEOPARDY • ANSWER: Calculate the speed of a roller coaster at the bottom of a hill using the following information: • The mass of the roller coaster is 2000kg • The potential energy at the top is 10,000J • QUESTION: What is 3.16 m/s