1 A child runs into the street to chase a ball in front of a

1. A child runs into the street to chase a ball in front of an approaching vehicle which is travelling at a speed of 40 miles per hour. Assuming the road is level, at what distance must the driver see the child to stop in time? (20 points)

Solution

Velocity = 40 miles / sec.

Reaction time = 2.5 sec.

Distance at which driver should stop = V*t

= (40/3600)*2.5

= 0.0278 miles