Recent content by EelAnes

Okay but how should I determine the terminal velocity without knowing the coefficient at firt?

I'm not familiar with terminal velocity, so can you show me how it's done base on one of the data set above please?

Yes they want a graph of drag vs time

every calculation should be done other SI units D=Cd*1/2(p*V^2)*A Solving for D (drag force) A = Surface area = πr^2 = π√(1.2025) r = √[(10•10^-2)^2+(4.5•10^-2)^2] = √(1.2025) p = Density of air = 1.225 kg/m^3 Cd = Coefficient of drag = ? V = ? = ?

Note that the experiment is done indoor

Problem How to calculate the drag force of the model helicopter using the given data above? Research Question How does increasing the length of the wing planform of a model paper helicopter affect the time it takes the helicopter to fall to the ground and hence the air resistance? Variables...

CWatters First of all, I would like to know the drag force at an angle. Secondly, I'm calculating the drag force for an experiment. My experiment is about how does increase the surface area of the wing can affect the time it drops and hence the air resistance.

What is the coefficient of drag on a flat surface? Note: The body is in free fall The object has 2 wings planform (it's a paper helicopter), which is flat The object's wing spin in a circular motion (anti-clockwise) during free fall

I believe that this experiment applies to the law of conservation of energy since energy does transform into from one to another. However, I think that the internal changes inside the soccer ball seem applies to other law. I believe that the law applied to the gas is the Kinetic theory of gases...

The research question of this experiment stated "What is the effect of changing the air pressure (kPa) inside a soccer ball on the distance (m) that the ball will travel (when it first hits the ground) as measured by using the AG500 digital air pressure gauge (to 0.01 kPa) and a field measuring...