0
Why does a parachuete make a person falling from a greater height fall more slowly?
.
Say freefall terminal velocity (vf) = 60 metres per second
Say landing terminal velocity (vl) = 6 metres per second
Mass of freefaller (m) = 70 kg
Acceleration due to gravity (g) = 10 (m/s)/s (approx)
.
Force down (newtons)= mass * acceleration due to gravity
Force up (newtons) = drag coefficient * velocity squared
Terminal velocity is where forces balance:
m * g = dc * v2
.
Freefall velocity (parachute closed) = 60 metres per second
m * g = dc * (vf)2
then:
dc = (m * g) / (vf)2
dc = 700 / 3600
dc = 0.194 (prior to parachute opening)
.
Landing velocity (parachute open) = 6 metres per second
dc = (m * g) / (vl)2
dc = 700 / 36
dc = 19.44 (with parachute open)
What else can I help you with?
How fast does a person fall after falling from a height of 25 feet?
A person falling from a height of 25 feet will reach a speed of approximately 31 feet per second (or 21 miles per hour) when they hit the ground. This speed is reached due to the acceleration caused by gravity.
Does falling from a great height kill a person from the impact or from the fright of falling?
The fright of falling may trigger a heart attack or some other form of stress related injury, but those are isolated cases. Upon impact, your bones would shatter, wounding all material around it, causing instant death. I don't know about you guys but i would crap myself.
When would a person going down a hill have the most potential energy?
A person going down a hill will have the most potential energy at the top of the hill, where the gravitational potential energy is highest due to the greater height. As the person descends the hill, potential energy is converted into kinetic energy.
What is the role of an airbag placed where a falling object is expected to land and how can an air bag prevent injury to someone who jumps from height?
An airbag placed where a falling object is expected to land can cushion the impact and absorb the energy of the falling object, reducing the risk of damage or injury to surrounding structures or individuals. When someone jumps from height, an airbag can provide a soft landing surface that absorbs the impact and decelerates the person gradually, reducing the force exerted on the body and lowering the risk of injury, especially to the spine or joints.
How could the acceleration of the person on the swing be increased?
The acceleration of the person on a swing can be increased by increasing the angle of release, as a greater angle results in a longer pendulum length and thus greater acceleration. Additionally, increasing the initial height from which the person is released can also lead to higher acceleration due to the increased potential energy. Finally, reducing air resistance by swinging in a more aerodynamic position can help increase acceleration.
How will a person land after falling backwards from a height of 3 meters?
on his but
How fast does a person fall after falling from a height of 40 feet?
The answer to that is 40-56 mph i quess
At what height the risk is considered fatal when working at height is considered?
Falling from any height can be fatal, it all depends on how you land. A person can trip while walking and land just right to cause a fatality while another person can fall 40 feet and still live. So there is not any real height to consider because its not the factor in falling fatalities.
How fast does a person fall after falling from a height of 50 feet?
The speed at which a person falls after falling from a height of 50 feet can be calculated using the laws of physics. Ignoring air resistance, the person would be falling at a speed of approximately 33.2 feet per second when they hit the ground. This can be calculated using the equation v = sqrt(2gh), where v is the final velocity, g is the acceleration due to gravity (32.2 ft/s^2), and h is the height (50 feet).
How fast does a person fall after falling from a height of 25 feet?
A person falling from a height of 25 feet will reach a speed of approximately 31 feet per second (or 21 miles per hour) when they hit the ground. This speed is reached due to the acceleration caused by gravity.
What are some cheerleading words that start with the letter s?
The spotter is the person responsible for watching the stunt and prepared to step in if there is a hazard such as a person falling from a height.
What should be done to prevent a person from falling from height while working on radial drilling machine or while welding at height by sitting on shell and welding the nozzle the height around 4 mtr?
4000ft
Does falling from a great height kill a person from the impact or from the fright of falling?
The fright of falling may trigger a heart attack or some other form of stress related injury, but those are isolated cases. Upon impact, your bones would shatter, wounding all material around it, causing instant death. I don't know about you guys but i would crap myself.
Why a person without a parachute falls fast than a person without a parachute falling from same height?
if there is no air then both will take same time.But due to presence of air person who is without parachute will take less time.
How do you find the height of two people who's average height together is ft in?
Not enough information - or in other words, there are infinitely many solutions.Choose any height for the same person. Let's assume this height is greater than the average. Calculate the difference between this height and the average, then subtract that from the average to get the second person's height.
How fast does a person fall after falling from a height of 200 feet?
9.8 meters per second squared. So the longer they are in the air, they will fall faster by each second.
A person who studies reasons for rising and falling populations is a?
A person who studies reasons for rising and falling populations is a Demographer
