A point initially at rest moves along x-axis. Its acceleration varies with time as a = (6t + 5) m/s 2 . If it starts from origin, the distance covered in 2 s is.
Text Solution
Verified by ExpertsThe correct answer is:
B
Given, a = 
= 6t + 5
Or dv = (6t + 5) dt
Integrating, we get
or v = 
Again v = 
ds = 
Integrating again, we get
s = 
When, t = 2s, s = 3 × 
= 3 × 
= 8 + 10 = 18m
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