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Welcome to Physics Quest!

Welcome to Physics Quest!. Work And Energy Review Game. In this game, you will work individually to answer the questions posed on the screen. Each answer will be given and your lab partner will check to see if you were correct. If you were right, they will record one point for your score.

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Welcome to Physics Quest!

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  1. Welcome to Physics Quest!

  2. Work And Energy Review Game • In this game, you will work individually to answer the questions posed on the screen. • Each answer will be given and your lab partner will check to see if you were correct. • If you were right, they will record one point for your score. • Whoever has the most points at the end of the game will win. • To the victor will go the spoils!

  3. How much work does a 65 kg student do if he climbs 5 meters up a wall? • The correct answer is... • W=Fd=mgd=(65kg)(10m/s/s)(5m)=3250J

  4. What is the student’s power if it takes them 6.3 s to climb up the wall? • The correct answer is... • P=W/t=3250J/6.3s=515 W

  5. True or false. A person holding a barbell stationary over their head is doing work. • The correct answer is... • False. The force must be applied through a distance..

  6. True or False. Work out is always greater than work in. • The correct answer is... • False. Work in is always greater than Work out.

  7. Why is work in always greater than work out? • The correct answer is... • Friction.

  8. Which of the following is a possible unit for work? • Newton-meter • Watt • Depies • Newton • The correct answer is … • Newton-meter which is equal to a Joule

  9. A ramp, 3 meters long is used to lift a box 1.2 meters high. What is the IMA? • The correct answer is... • IMA = input Distance/output Distance = 3/1.2 = 2.5

  10. The number of times a machine multiplies the input force is called the ______. • Work in • Work out • Mechanical Advantage • Efficiency • The answer is … • Mechanical Advantage

  11. Find the potential energy of a cat of mass 5kg if it stuck in a tree, 6 meters above the ground. • The answer is... • PE=mgh=(5kg)(9.8m/s/s)(6m)=294 J

  12. Which of the following would have the greatest mechanical advantage? • An inclined plane with a long length and short height. • An inclined plane with a long length and large height. • An inclined plane with a short length and short height. • An inclined plane with a short length and large height..

  13. The answer is …. • The long length and short height produces the greatest MA

  14. A tennis ball of mass 0.4 kg is moving at 25 m/s. What is it’s kinetic energy? • The answer is ... • KE= 1/2 mv2 = 0.5(0.4kg)(25m/s)2 =125 J

  15. How fast is a rock moving if it has a mass of 0.38 kg and has a kinetic energy of 4 J? • The answer is ... • KE=1/2mv2 v=square root of 2KE/m v=4.59m/s

  16. Which type of lever is a seesaw? • 1st Class • 2nd Class • 3rd Class • The answer is ... • a seesaw is a first class lever.

  17. Which type of lever is a door? • 1st class • 2nd class • 3rd class • If you said 3rdclass… • you are correct!

  18. Which type of lever is a wheel barrow? • 1st class • 2nd class • 3rd class • If you said 3rd class… • you are incorrect. It is a 2nd class lever!!

  19. Which type of lever is your forearm? • 1st class • 2nd class • 3rd class • If you said 2nd class… • you are correct!

  20. Which type of lever is a golf club? • 1st • 2nd • 3rd • The answer is… • a third class lever

  21. A compound machine is a • electrical device • machine that makes compounds • combination of two or more simple machines • sophomore • The answer is ... • It is a combo of simple machines.

  22. If a person has 15500 J of potential energy when they are standing on a cliff, How much kinetic energy would they have if they were to fall to the bottom of the cliff? • 0 J • 15500 J • 7750 J

  23. The answer is 15500J!

  24. What form of energy does water at the top of a dam have? • Heat • nuclear • light • potential • kinetic • The answer is …. • The water has potential energy, which is turned into mechanical energy. Finally, the mechanical energy is turned into electrical energy

  25. Energy is the ability to do _______. • Motion • power • acceleration • work • The answer is … • Energy is the ability to do work.

  26. A stretched rubber band has ______ energy. • potential • kinetic • nuclear • electromagnetic • The answer is … • The rubber band has potential energy.

  27. What is the Ideal Mechanical Advantage of the Lever below, if you pull the scale 10 cm to move the mass 5 cm? • Check your partner’s answer to see if it is… • 2!

  28. The IMA of the lever below is 2. If the mass in the picture below has a weight of 20 Newtons, ideally how much force must the person apply? • Well… • The correct answer is 10 Newtons!

  29. If the input force moves further from the fulcrum, what happens to the amount of force that needs to be applied to raise the mass? • The correct answer is… • It decreases.

  30. What is the IMA of the pulley pictured to the right? • The correct answer is … • 3!

  31. If the person in the picture wants to raise the weight 15cm, how far will he have to pull the scale? • If you said 5cm … • You are incorrect! • The correct answer is 45cm!

  32. If the mass in the picture below has a weight of 10 Newtons, will the input force be more or less than 10 Newtons? • If you said less … • You are incorrect!

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