Direction for question 5 to 8: Go through the data set given below and solve the questions based on it.

If the rate of deceleration of the 8th hour had continued further, the speed would have become zero in

Option 1 - <p>9 hours 10 minutes</p>
Option 2 - <p>10 hours 30 minutes</p>
Option 3 - <p>11 hours 10 minutes</p>
Option 4 - <p>None of these</p>
1 Views|Posted 6 months ago
Asked by Shiksha User
1 Answer
V
6 months ago
Correct Option - 2
Detailed Solution:

Deceleration in 8th hour = 20 km/h2

Speed at the end of 8th hour = 50 km/h

Speed will be zero after 't' h where 0 = 50 – 20 * t

= t = 5 0 2 0 = 5 2 h o u r s = 2 1 2 h o u r s

= speed will be zero at 10 h 30 minutes.

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