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Fourth Six Weeks TEST Study Guide 2015 1. What can you tell about the speed of a thing from a distance over time graph? _____________________________________ _____________________________________ 2. What is the formula for speed? ___________________________________ 3. How does an inclined plane reduce the effort needed to raise a load? _____________________________________ 6. A student places a toy car at the top of a ramp and releases it. The student records the distance the car has traveled at different increments of time. The student’s data are displayed in the following table. Time Distance (seconds) (centimeters) 1 9 2 18 3 27 4 36 5 45 _____________________________________ What is the toy car’s average speed? 4. How does a pulley reduce the effort needed to raise a load? Was the toy car’s speed constant? _____________________________________ _____________________________________ 5. Distance vs. Time What was Mary’s average speed? What was John’s average speed? 7. The graph above shows the motion of a motorcycle rider. What was the average What was Mary’s speed between seconds 2 and 3? What was John’s speed between seconds 2 and 3? speed of the motorcycle? 8. Calculate the speed: Distance Time 16. What does a curved line on a distance Speed vs time graph mean? 22 m 11 sec 400 km 8 hr 60 cm 15 sec 1.50 m 10 min 88.8 km 4 sec 96 cm 6 sec 17. The force that opposes the motion of two surfaces sliding past each other is called _______________________. 18. What is a force? 9. How does a single, fixed pulley change the effort force needed to lift a load? 19. _____________________ is an object's tendency to resist changing its motion. 10. What force holds the planets in their orbits? 20. John is pulling a rope to the left with a force of 30N, Michael is pulling to the 11. What characteristic do all of the inner planets have in common? right with a force of 45N. The rope will move right with a force of 15N. a. True 12. When an inclined plane gets longer, the effort force gets __________________. 13. When an inclined plane gets steeper, b. False 21. What has NASA used to learn about our solar system? the effort force gets _______________. 14. What does a horizontal line on a distance vs time graph mean? 22. Describe how the shuttle program differs from the space programs that came 15. What does a straight line on a distance vs time graph mean? before it: