CBSE Class 11-science Answered
An object starts from a point and moves on a smooth portion of land, where there is no friction. It then moves into an area with friction such that the retardation is 
. Find the total time and distance covered, before it stops.
Asked by Topperlearning User | 21 Apr, 2014, 08:17: AM
Expert Answer
To cover the first 100 m, it would take
. The time taken before it finally stops in the rough patch is given by v = u + at
0 = 10 + -2 t 
t = 5 s
distance covered in this part
Answered by | 21 Apr, 2014, 10:17: AM
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