An auto travelling along a straight road increases its speed from 30.0 m s -1 to 50.0 m s -1 in a distance of 180 m. If the acceleration is constant, how much time elapses while the auto moves this distance?
Text Solution
Verified by ExpertsThe correct answer is:
B
Lat a be constant accelerations of auto
Here, u 
v = 
, S = 180 m
As 
(2500)-(900) = 
As 
Solving this quadratic by quadratic formula, we get
t can’t be negative
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