Askydiver of mass 80.0 kg jumps from a slow-moving aircraft and reaches a terminal speed of 50.0 m/s. (a) what is her acceleration when her speed is 30.0 m/s? what is the drag force on the skydiver when her speed is

6.3 m/s²

Explanation:

m = mass of the skydiver = 80.0 kg

k = constant

v = speed at any time

a = acceleration

W = weight = mg = 80 x 9.8 = 784 N

Force equation for the motion of skydiver is given as

W - k v² = ma

at v = 50 m/s , a = 0

784 - k (50)² = (80) (0)

k = 0.3136

At v = 30 m/s, equation can be written as

W - k v² = ma

784 - (0.3136) (30)² = 80 a  

a = 6.3 m/s²

the answer is 3.1 his answer is wrong mines is right

answer: the correct answer for the fill in the blank is rods.

rods are the specialized photoreceptor cells that are present in the retina of human eye. they are responsible for vision in the night time ( also called scotopic vision). they have very low visual acuity and color distinguishing ability.

as they are responsible for vision in night time, therefore they are found predominantly in the nocturnal animals.