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Posted Under: Zong on Sep 3, 2000


Question 862 of 1002

Reaction time is the time...
Justification

Reaction time is defined as the time from sensing and perceiving a potential hazard until you have decided how to act in the situation.

Reaction distance is the distance traveled in this time, which can be found by multiplying the reaction time (in seconds) by the speed (in metres per second).

For example, the reaction distance is 22 metres if the reaction time is 1 second and the speed is 80 km/h (as 80 km/h is the same as 22 m/s).
Options
from when the danger arises until the driver senses the danger
from when the driver has observed a danger until the vehicle has completely stopped
the driver needs to sense, understand and decide on a course of action
from the start of the action until it is finished




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