Example 4: A driver on a mountain highway with a 7% downslope notices a traffic sign...

  

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Example 4: A driver on a mountain highway with a 7% downslope notices a traffic sign 850ft ahead in the roadway. The driver strikes the sign at a specd of 30mph. If the driver insists that the 60mph speed limit was not exceeded, what would be the associated reaction time for this driver? Assume the deceleration rate a is 3.4 m/s?[11.2 ft/s2]. Given: u,=60 mph; uz=30 mph; a=11.2; g=32.2; G= - 7%; S=850ft Find: t, Solution: • S = Example 4: A driver on a mountain highway with a 7% downslope notices a traffic sign 850ft ahead in the roadway. The driver strikes the sign at a specd of 30mph. If the driver insists that the 60mph speed limit was not exceeded, what would be the associated reaction time for this driver? Assume the deceleration rate a is 3.4 m/s?[11.2 ft/s2]. Given: u,=60 mph; uz=30 mph; a=11.2; g=32.2; G= - 7%; S=850ft Find: t, Solution: • S =

Answer rating: 100% (QA)

Given initial speed u60mph88fts Final speed v 30 mph44fts Total Distance traveled850 ft ... View the full answer