2. Motion Newton’sLaws Friction Forces in Fluids SimpleMachines Potential and KineticEnergy $100.00 $ 100.00 $ 100.00 $ 100.00 $ 100.00 $100.00 $200.00 $300.00 $400.00 $500.00

3. This is the SI unit of acceleration. What is m/s/s? Back to you Alex

4. This is what acceleration is a change in. What is Velocity? Back to you Alex

5. This is what is determined when you divide the distance a car travels by the time it took to travel that distance. What is average speed? Back to you Alex

6. The driver of a car suddenly makes a sharp turn, why will the passenger slide to the side of the car? What is inertia? Back to you Alex

7. Calculate the average speed of a car that travels 500 km in 5 hours. What is 100 km/h? Back to you Alex

8. Inertia is used to explain this Newton’s Law. What is the 1 st Law? Back to you Alex

9. Of the following, 5000 kg dump truck, 1000 kg car, 10 kg rock, or 1kg cat, the object with the greatest inertia. What is the 5000kg dump truck? Back to you Alex

10. A student kicks a 0.5 kg ball. Then she kicks a 50 kg rock with the same force. The acceleration of the ball compared to the rock is this. What is the ball’s acceleration is much greater. Back to you Alex

11. This is a measure of the inertia of an object. What is the object’s mass? Back to you Alex Daily Double

12. What force is necessary to accelerate a 1,250 kg car at rate of 40 m/s/s, using the formula (F=ma)? What is 50,000 N? Back to you Alex Daily Double

13. A n object moving in a straight line with a constant speed has no unbalanced forces acting on it. How will the object’s motion change over time? What is its motion will remain unchanged? Back to you Alex

14. This is the kind of friction that causes a skydiver’s acceleration to change as she falls. What is fluid friction? Back to you Alex

15. This is the force that opposes the motion between two surfaces touching. What is friction? Back to you Alex

16. This is the type of friction that you use when you apply the brakes on a car or bicycle. What is sliding friction? Back to you Alex

17. This causes napkins to stay on the picnic table even though there is a slight breeze. What is static friction? Back to you Alex

18. George applies 200 N to a machine and the applies 2000 N to an object. What is the MA? (MA = Force of the load divided by the effort force) What is 10? Back to you Alex

19. If a track athlete runs a 1600 m race at a constant speed of 6.0 m/s, how long will it take her to run the race? (s = d/t) You have to rearrange this to t = d/s. What is 267 seconds which when divided by 60 equal 4.4 minutes? Back to you Alex

20. This is what the volume of fluid an object displaces is equal to. What is a volume with a weight equal to that of the object? Back to you Alex

21. A car with a mass of 1400 kg moves along the ice with a constant velocity of 18 m/s. What is the car’s momentum? p = mv What is a 25,200 kg m/s? Back to you Alex

22. What is the net force on an object if one force has a magnitude of 10 N and is directed toward the north and the other has a magnitude of 5 N and is directed toward the south? What is 5 N north? Back to you Alex

23. Melissa wants to help her friend lift a box using a board and a rock. Using the diagram below, where should Melissa position the fulcrum in order to minimize the amount of force needed to lift the box? What is a position D? Back to you Alex

24. What is thought might happen if astronauts, who wear pressurized suits in space, took their suits off? What is they would explode? Back to you Alex

25. What is needed to calculate an object’s acceleration? What is starting velocity, ending velocity, and time? Back to you Alex

26. Juan and Anita each lift an identical stack of books the same distance onto a table, but Anita does the job twice as fast as Juan. Therefore, her actions involve twice as much what? What is power? Back to you Alex

27. A student is given a 10 kg rock, four boards (1m, 2m, 3m, and 4m) and a fulcrum to make a lever. Which board would have the greatest mechanical advantage if the fulcrum is placed in the same place relative to the load? What is the 4 m board? Back to you Alex

28. This is the SI unit for energy. What is the Joule? Back to you Alex

29. If a fluid flows from area A to area B, then what must be the conditions of area B? What is potential energy? Back to you Alex

30. The distance-time graph below depicts a moving object. Over which interval is the velocity the greatest? What is between A and B? Back to you Alex

31. The same amount of force will produce different accelerations, because the masses of two shopping carts are different. This is an example of which of Newton’s laws? What is Newton’s 2 nd Law? Back to you Alex

32. The table shows density of two types of plastic that have been placed in an aquarium filled with water. SubstanceDensity Plastic x1.38 g/cm 3 Plastic y0.90 g/cm 3 water1.00 g/cm 3 A student is given a mixture of 10 plastic beads that all look the same. Some of the beads are made from plastic x and some are made from plastic y. Show a picture of what it would look like. What is the first picture? Back to you Alex