Motion and Time
Q.1. Give an example of translatory motion.
Q.2. Give an example of periodic motion.
Q.3. Give an example of circular motion.
Q.4. How do we know that an object is moving faster or slower?
Q.5. What are needed to know the speed of an object?
Q.6. What is speed?
Q.7. What is a uniform motion and nonuniform motion?
Q.8. How did the people in ancient time come to know the time?
Q.9. What was the day in earlier times?
Q.10. What was a month in earlier times?
Q.11. What was a year in earlier times?
Q.12. Name some devices used to measure time?
Q.13. What is a sundial?
Q.14. What is a sand clock? What is its other name?
Q.15. What is a water clock?
Q.16. Who invented the first pendulum clock and in which year?
Q.17. What is a simple pendulum?
Q.18. Give an example of periodic or oscillatory motion.
Q.19. What is time period with respect to a pendulum?
Q.20. Name two devices based on pendulum clocks.
Q.21. What are Quartz clocks or Digital clocks?
Q.22. What is the standard unit of time? What is its symbol?
Q.23. What is the basic unit of speed?
Q.24. What parameters are needed to know the average speed of a body?
Q.25. Name the fastest creature on earth? What is its highest speed?
Q.26. Which instrument measures the speed of a vehicle?
Q.27. Which instrument measures the distance travelled by a vehicle?
Q.28. What is the name of the graph which represents the motion of an object?
Q.29. What is the name given to the meeting point of the two axes?
Q.30. How many axes a graph paper has?
Q.31. What is the name given to the horizontal and vertical axes respectively?
Q.32. On what axes are time and distance taken respectively?
Q.33. What are the uses of distance-time graph?
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