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Selina solutions

CHAPTERS

1. Chapter 1 – Measurements and Experimentation

2. Chapter 2 Motion In One Dimension

4. Chapter 4 Pressure In Fluids And Atmospheric Pressure

5. Chapter 5 Upthrust In Fluids Archimedes Principle And Floatation

7. Chapter 7 Reflection Of Light

8. Chapter 8 Propogation Of Sound Waves

A body is moving in a straight line and its displacement at various instants of time is given in the following table:

Time (s) | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
---|---|---|---|---|---|---|---|---|

Displacment (m) | 2 | 6 | 12 | 12 | 12 | 18 | 22 | 24 |

Plot displacement-time graph and calculate:

(i) Total distance travelled in interval 1s to 5s,

(ii) Average velocity in time interval 1s to 5s.

(i) The total distance that is covered in interval 1s to 5s = 18m-6m = 12m (ii) Average velocity = displacement in given time interval/ time interval = 12/4= 3m/s

A body is moving in a straight line and its displacement at various instants of time is given in the following table:

Time (s) | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
---|---|---|---|---|---|---|---|---|

Displacment (m) | 2 | 6 | 12 | 12 | 12 | 18 | 22 | 24 |

Plot displacement-time graph and calculate:

(i) Total distance travelled in interval 1s to 5s,

(ii) Average velocity in time interval 1s to 5s.

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