In the anatomical position, the gluteal and lumbar are on the ___

Posterior of the body

Explanation:

Gluteal region is located at the proximal end of the femur and posterior to the pelvic girdle.  The gluteal muscles help to move the lower limb at the hip joint. The gluteal region is divided into two groups: Deep lateral rotators and superficial abductors and extenders.  

The lumbar is the lower region of the spine commonly known as lower back, it has five vertebrates.  The lumbar contain tissue and nerves that control communication between legs and brain. In anatomical terms they are located inferior to the rib cage, at the bottom section of the vertebral column and superior to sacrum and pelvis.

a)

b) a = 5.59 m/s²

Explanation:

given,

total distance traveled by the car to stop is 56.9 m when speed of vehicle is 80 km/h or 80 × 0.278 = 22.24 m/s

total distance traveled by the car to stop is 25.7 m when speed of vehicle is 50.7 km/h or 50.7 × 0.278 = 14.09 m/s

using stopping distance formula

................(1)

..............(2)

on solving both the equation we get

a = 5.59 m/s²

now reaction time calculation