BIOLOGY: Falls resulting in hip fractures are a major cause of injury and even death to the elderly. Typically, the hip's speed at impact is about 2.0 m/s If this can be reduced to 1.3 m/s or less, the hip will usually not fracture. One way to do this is by wearing elastic hip pads a) If a typical pad is 5.0 cm thick and compresses by 2.0 cm during the impact of a fall, what constant acceleration (in m/s2) does the hip undergo to reduce its speed from 2.0 m/s to 1.3 m/s? The acceleration you found in part (a) may seem rather large, but to fully assess its effects ) , on the hip, calculate how long it lasts.​