2 years ago

Need help with physics! Please provide explanation.

Physics

1 answer:

GrogVix [38]2 years ago

4 0

Electromagnetic Waves: This type of wave requires no medium (substance) to travel through.

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The terminal velocity of a person falling in air depends upon the weight and the area of the person facing the fluid. Find the t

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v=414 km/h

Explanation:

Given data

$A_{area}=0.140m^{2}\\ p_{air}=1.21 kg/m^{3}\\ m_{mass}=80kg$

To find

Terminal velocity (in meters per second and kilometers per hour)

Solution

At terminal speed the weight equal the drag force

$mg=1/2*C*p_{air}*v^{2}*A_{area}\\ v=\sqrt{\frac{2*m*g}{C**p_{air}*A_{area}} }\\ Where C=0.7\\v=\sqrt{\frac{2*9.8*80}{1.21*0.14*0.7} }\\ v=115m/s$

For speed in km/h(kilometers per hour)

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$v=(115*3.6)km/h\\v=414km/h$

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