A driver brakes heavily for 4.5 seconds, slowing from 55 MPH to a stop. What is her average acceleration during this time, in ft/ s^2?
What will be an ideal response?
-17.9 ft/s^2
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A welded tee joint can be strong only if it is welded on both sides and has deep penetration.
Answer the following statement true (T) or false (F)
If you must make an emergency stop brake so that
a) Use the full power of the brakes to lock them b) Can steer and you vehicle will stay in a straight line c) Use the hand brake before the brake pedal
A certain commercial jet plane uses a mean of 0.15 gallons of fuel per passenger-mile, with a standard deviation of 0.01 gallons.
a. Find the mean number of gallons the plane uses to fly 8000 miles if it carries 210 passengers. b. Assume the amounts of fuel used are independent for each passenger-mile traveled. Find the standard deviation of the number of gallons of fuel the plane uses to fly 8000 miles while carrying 210 passengers. c. The plane used X gallons of fuel to carry 210 passengers 8000 miles. The fuel efficiency is estimated as X/(210× 8000). Find the mean of this estimate. d. Assuming the amounts of fuel used are independent for each passenger-mile, find the standard deviation of the estimate in part (c).
Technician A says that ASE provides the question items you missed along with the correct answers to help you study. Technician B says that recertification tests must be taken every 3 years. Which technician is correct?
A) Technician A B) Technician B C) Both technicians D) Neither technician