A 60.0-kg and a 90.0-kg skydiver jump from an airplane at an altitude of , both falling in the pike position. Make some assumption on their frontal areas and calculate their terminal velocities. How long will it take for each skydiver to reach the ground (assuming the time to reach terminal velocity is small)

The terminal velocity for both skydiver are 99.58 m/s and 121.9 m/s.

The time for both skydiver are 60.25 sec and 49.22 sec

Explanation:

Given that,

First mass = 60 kg

Second mass = 90 kg

Suppose, altitude

Area =.14 m²

C= .7

Density = 1.21 kg/m³

We need to calculate the terminal velocity

Using formula of terminal velocity

For first mass,

Put the value into the formula

For second mass,

Put the value into the formula

We need to calculate the time of first skydiver

Using formula of time

Put the value into the formula

We need to calculate the time of second skydiver

Using formula of time

Put the value into the formula

Hence, The terminal velocity for both skydiver are 99.58 m/s and 121.9 m/s.

The time for both skydiver are 60.25 sec and 49.22 sec

ice to water 1 water to vapour 2 latent heat

answer;

d. are made mostly of liquid

explanation;

-the general   composition and structure planets includes; they have a thick gas and liquid layer covering a small,solid core. mostly the gases are hydrogen and helium atmosphere and layers of liquid hydrogen. for instance neptune and uranus are examples of the outer planets, they have a core covered by ice and ammonia.

-neptune's atmosphere is hydrogen and helium with a bit of methane so there is no oxygen to breath and the interior is made up of frozen water and ammonia with a rock and iron core. thus, there is no liquid water or solid surface to survive.