Police use the formula: v = √ 20 L to estimate the speed of a car, v , in miles per hour, based on the length, L , in feet, of its skid marks when suddenly braking on a dry, asphalt road. At the scene of an accident, a police officer measures a car\'s skid marks to be 109 feet long. Approximately how fast was the car traveling? Round your answer to the nearest tenth (one decimal place) of a unit.

Answer: The car was traveling at approximately ____________ miles per hour.

Answer: The car was traveling at approximately ____________ miles per hour.

Answer

0
(0 stars)

0

Answer:46.7 mph

Step-by-step explanation:The

speedcan be found bysubstitutingthe measuredskid lengthfor thevariablein theformula.v = √(20L)

v = √(20×109) = √2180 ≈ 46.7

The car was traveling at approximately 46.7 miles per hour.