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CBSE Class 9 Answered

Answer 19 with explanation
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Asked by md775016 | 02 Mar, 2018, 10:02: PM
answered-by-expert Expert Answer
Let acceleration is a;
 
Distance travelled in first 10 seconds, X1 = (1/2)a×10×10 = 50a;
 
velocity after 10 seconds, v = a×10 = 10a ;
 
Distance travelled in next 10 seconds, X2 = 10a×10+(1/2)a×10×10 = 150a;
 
X2 = 3X1; this answer is not given as any one of option; hence we have to select (d) None of these
 
 

Answered by Thiyagarajan K | 05 Mar, 2018, 11:31: AM

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