The perception-reaction time for a vehicle travelling at 90 km/h, given the coefficient of longitudinal friction of 0.35 and the stopping sight distance of 170 m (assume g = 9.81 m/s ), is ____________ seconds.

The perception-reaction time for a vehicle travelling at 90 km/h, give

1.	The perception-reaction time for a vehicle travelling at 90 km/h, given the coefficient of longitudinal friction of 0.35 and the stopping sight distance of 170 m (assume g = 9.81 m/s ), is ____________ seconds.
A.	1.151 s
B.	2.215 s
C.	3.151 s
D.	4.024 s
Answer» D. 4.024 s

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The perception-reaction time for a vehicle travelling at 90 km/h, given the coefficient of longitudinal friction of 0.35 and the stopping sight distance of 170 m (assume g = 9.81 m/s ), is ____________ seconds.

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