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Brief Questions and Answers on Motion (3 marks each)
1. In a park, children are enjoying a ride on Ferris wheel as shown. What kind of motion the Ferris wheel has and what kind of motion the riders have?
2. A boy moves for some time, give two situations in which his displacement is zero but the covered distance is not zero?
3. A stone tied to a string is whirling in a circle, what is the direction of its velocity at any instant?
4. Is it possible to accelerate an object without speeding it up or slowing it down?
5. Can a car moving towards right have the direction of acceleration towards left?
6. With the help of daily life examples, describe the situations in which:
7. Explain translatory motion and give examples of various types of translatory motion.
8. Differentiate between the following:
9. Define the terms speed, velocity, and acceleration.
10. Can a body moving at a constant speed have acceleration?
11. How do riders in a Ferris wheel possess translatory motion but not rotatory motion?
12. Sketch a distance-time graph for a body starting from rest. How will you determine the speed of a body from this graph?
13. What would be the shape of a speed-time graph of a body moving with variable speed?
14. Which of the following can be obtained from the speed-time graph of a body?
15. How can vector quantities be represented graphically?
16. Why vector quantities cannot be added and subtracted like scalar quantities?
17. How are vector quantities important to us in our daily life?
18. Derive equations of motion for uniformly accelerated rectilinear motion.
19. Sketch a velocity-time graph for the motion of the body. From the graph, explain each step, calculate the total distance covered by the body.