Answer:
The
range of headlights of car is the maximum distance (s) upto which an obstacle
on the road can be seen by the driver. The car must stop before it hits the
obstacle. If a is retardation produced in the car by applying brakes, then to
stop the car within the distance s, the speed \[\upsilon \] of the car must be
less than\[\sqrt{2as}\]. Hence the speed of driving a car safely depends upon
s, the range of head lights.
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