A paratrooper and his 8-m-diameter parachute weigh 1000 N. Taking the average air density to be 1.2 kg/m3, determine the terminal velocity of the paratrooper. Take the drag coefficient of the parachute as CD

= 4.35 m/s

Explanation: Drag Force opposes the motion of an object and depends on  shape, size, velocity of the object or person and the fluid it is in.

Terminal velocity occurs when gravitational force and drag force are equal, which gives a net force and acceleration of zero. At that moment, velocity is constant and called terminal.

Terminal velocity is found by the following formula:

ρ is density of the fluid

C is drag coefficient

A is area of the object in which forces are acting

The paratrooper and his parachute weighs 1000N, so this means

mg = 1000

Drag coefficient of a parachute is an average of C = 1.75

A parachute is half an sphere. So, area is

A = 16π m²

Substituing:

= 4.35

The terminal velocity of the paratrooper is 4.35m/s

the temperature and the pressure affect solubility. temperature affects by changing the properties of the solvent. the increase in pressure increases solubility, the decrease in pressure decreases solubility.

gpe = mass x gravity constant x height or… gpe = mgh

where… mass: measured in kilograms (kg)

gravity: gravity constant on earth = 10.00 m/s2

height: measured in meters (m)

gpe: measured in joules (j) or kilojoules (kj)

how do you solve gpe?

gravitational potential energy (gpe) is the energy an object has because of its position above the. ground.

gpe = mass x gravity constant x height or… gpe = mgh.

mass:

note: to earn full marks when solving science word problems, you must show your work:

formula.

example:

given values:

mass = 0.3 kg.