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# Motion Important questions | Grade VIII

## Important questions for Motion for Grade VIII

1. Define motion .
2. Define rest .
3. What is a reference point or a reference frame ?
4. Define Scalar and Vector quantity with example .
5. Define distance and displacement .
6. What type of motion is the apple falling from the tree , why ?
7. Define uniform motion .
8. Define non-uniform or variable motion .
9. What is meant by speed ? Write its formula .
10. Define velocity . Write its unit and formula .
11. What is acceleration ? Write its unit and formula .
12. Derive v = u + at where symbols has their usual meaning .
13. Define positive acceleration and negative acceleration (retardation) .
14. Define uniform and non-uniform acceleration .
15. What will be the acceleration of a body moving with uniform velocity , why ?
16. A car is moving with 30 km/hr. What does it indicate speed or velocity , why ?
17. Define relative motion .
18. Define relative velocity .
19. Light travels 3,00,000 km/s. Is it velocity or speed ?