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anyanavicka [17]
3 years ago
7

HEYOOO PEEPS As skydivers fall through the air, a resisting force builds up underneath them. This air resistance decreases their

acceleration toward the ground, making them reach a constant velocity as they fall. This is called terminal velocity. The average terminal velocity for a skydiver is about 200 km/hr.
This speed is much too fast for a skydiver to land safely. A safe speed for a skydiver to land at is only 30 km/hr.


Resistance from the air isn’t enough to slow down a skydiver to a safe landing speed. The skydiver needs a parachute.

2. What is the role of the parachute? Explain your reasoning.
Mathematics
2 answers:
Bingel [31]3 years ago
8 0

Answer: The net force and the acceleration on the falling skydiver is upward. An upward net force on a downward falling object would cause that object to slow down. The skydiver thus slows down. As the speed decreases, the amount of air resistance also decreases until once more the skydiver reaches a terminal velocity.

Step-by-step explanation:

ur welcome

Hitman42 [59]3 years ago
5 0

Answer:

woah woah woah chill

Step-by-step explanation:

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Olenka [21]
A. It takes 25 minutes for the robot to complete one task

B. It can complete 4 tasks in one hour
6 0
3 years ago
What shape are possible cross section cylinder?
san4es73 [151]

Answer:

Circle

Step-by-step explanation:

The cross-section of a cylinder is a circle.

6 0
3 years ago
Find the area of the triangle formed by the vertex and x-intercepts of parabola y=-x^2-3x+10
Sonbull [250]

Answer:

42.875

Step-by-step explanation:

First you find the x-intercepts and the vertex of the equation.

(-5, 0), (-2, 0), (-3/2, 49/4)

You use those coordinates to find the sides of the triangle and then you use the lengths to find the semiperimeter.

Lastly, you use Heron's formula to compute the area.

3 0
3 years ago
Someone who is actually smart can you help me on this please it’s an emergency❤️‍
goldenfox [79]

Answer:

i haven't studied this subject but i think the answer would be corresponding angles

Step-by-step explanation:

if this answer seems very wrong don't take it

7 0
3 years ago
Determine an expression for dy<br> dx given that x = sin3<br> (t)andy = cos3<br> (t)
shtirl [24]

Answer:

\frac{dy}{dx} =-\sqrt[3]{\frac{y}{x} }

Step-by-step explanation:

Recall that using the chain rule we can state:

\frac{dy}{dt} =\frac{dy}{dx}*\frac{dx}{dt}

and therefore solve for dy/dx as long as dx/dt is different from zero.

Then we find dy/dt  and dx/dt,

Given that

x=sin^3(t)\\dx/dt = 3 sin^2(t)* cos(t)

And similarly:

y=cos^3(t)\\dy/dt=-3\,cos^2(t)*sin(t)

Therefore, dy/dx can be determined by the quotient of the expressions we just found:

\frac{dy}{dx} =\frac{dy/dt}{dx/dt} =\frac{-3\,cos^2(t)*sin(t)}{3\,sin^2(t)*cos(t)} =-\frac{cos(t)}{sin(t)}

now notice that we can find   cos(t) = \sqrt[3]{y}  from the expression for y,

and   sin(t) = \sqrt[3]{x}  from its expression for x.

Therefore dy/dx can be written in terms of x and y as:

\frac{dy}{dx} =-\frac{cos(t)}{sin(t)}=-\sqrt[3]{\frac{y}{x} }

4 0
3 years ago
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