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CBSE Class 9 Answered

Q) A car travelling at 60km/h overtakes another car travelling at 42km/h. Assuming each car to be 5m long. Find the time taken during the overtake.
Asked by banerjee_milky | 06 Jul, 2017, 09:41: PM
answered-by-expert Expert Answer
begin mathsize 12px style Let space the space distance space trvalled space by space the space car space moving space woth space straight a space speed space of space 60 space km divided by straight h space be space straight s subscript 1 space and space the space distance space trvalled space by space the space car space moving space woth space straight a space speed space of space 42 space km divided by straight h space be space straight s subscript 2. During space overtaking space straight s subscript 1 space equals space straight s subscript 2 space plus space 2 space cross times space Length space of space the space car rightwards arrow straight s subscript 1 space equals space straight s subscript 2 space plus 10 space straight m or space open parentheses 60 space cross times space 5 over 18 close parentheses straight t space equals space space open parentheses 420 space cross times space 5 over 18 close parentheses straight t space plus 10 rightwards arrow space straight t space equals space 2 space straight s Time space taken space for space overtakinfg space is space 2 space straight s. end style
Answered by Yashvanti Jain | 07 Jul, 2017, 11:28: AM

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CBSE 9 - Physics
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CBSE 9 - Physics
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CBSE 9 - Physics
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