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The average speed of a body in a certain time interval is the distance covered by the body in that time interval divided by time. So if a particle covers a certain distance s in a time t1 to t2, then the average speed of the body is:
vav = s/ t2–t1
In general, average speed formula is:
Average Speed = Total Distance / Total Time
Now let us look at some of the examples to understand this concept easily
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| Saturated hydrocarbons | Unsaturated hydrocarbons |
| Saturated hydrocarbons are the compounds containing only single covalent bonds. These are also known as alkanes. | Unsaturated hydrocarbons are the straight chain compounds containing double or triple covalent bonds. Hydrocarbons with a double bond between carbon atoms are known as alkenes. Hydrocarbons with triple bonds between carbon atoms are known as alkynes. |
| These compounds have more number of hydrogen atoms when compared to its corresponding unsaturated hydrocarbons. | These compounds have less number of hydrogen atoms when compared to its corresponding unsaturated hydrocarbons. |
| These compounds are less reactive. | These compounds are more reactive. |
| These compounds under go substitution reactions. CH4 + Cl2 → CH3Cl + HCl |
These compounds under go addition reactions. Ex: CH2=CH2 + H2 → CH3 - CH3 |
| Saturated hydrocarbons burns with blue flame | Unsaturated hydrocarbons burns with sooty flame |
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