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CBSE Class 11-science Answered

Particles moves a certain distance In a staright line as follows first 1/4th at V° next 1/2th at 2v2 last 1/4 th at v0 find avg speed
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Asked by rajputvicky746 | 12 Aug, 2021, 09:59: PM
answered-by-expert Expert Answer
Let d be the distance travelled .
 
Time taken t1 for initial travel distance (d/4),  t1 = distance time = (d/4) / vo =  d / ( 4 vo )
 
Time taken t2 for next travel distance (d/2),  t2 = distance time = (d/2) / 2vo =  d / ( 4 vo )
 
Time taken t3 for final travel distance (d/4),  t3 = distance time = (d/4) / vo =  d / ( 4 vo )
 
Total time = t1 + t2 + t3 = [ d / ( 4 vo ) ] + [ d / ( 4 vo ) ] + [ d / ( 4 vo ) ]  = (3/4) d/vo 
 
Average speed = total distance / total time  = d / [ (3/4) d/vo ]  = (4/3) vo 

Answered by Thiyagarajan K | 12 Aug, 2021, 10:59: PM

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