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Sphinxa [80]
3 years ago
7

A ball is thrown straight upward with an initial velocity of 16m/s. What is its velocity at its highest point?

Physics
1 answer:
lilavasa [31]3 years ago
5 0

Answer:

its going very fast

Explanation:

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A mountain lion jumps to a height of 3.25 m when leaving the ground at an angle of 43.2°. What is its initial speed (in m/s) as
miss Akunina [59]

Recall that

{v_f}^2={v_i}^2+2a\Delta y

where v_i and v_f are the lion's initial and final vertical velocities, a is its acceleration, and \Delta y is the vertical displacement.

At its maximum height, the lion has 0 vertical velocity, so we have

0={v_i}^2-2gy_{\rm max}

where <em>g</em> is the acceleration due to gravity, 9.80 m/s², and we take the starting position of the lion on the ground to be the origin so that \Delta y=y_{\rm max}-0=y_{\rm max}.

Let <em>v</em> denote the initial speed of the jump. Then

v_i=v\sin(43.2^\circ)=\sqrt{2\left(9.80\dfrac{\rm m}{\mathrm s^2}\right)(3.25\,\mathrm m)}\implies\boxed{v\approx11.7\dfrac{\rm m}{\rm s}}

6 0
3 years ago
A hydraulic press must be used to press-fit two components together in an assembly process. the system must generate at least 77
Kobotan [32]
The pressure generated by the piston at the input cylinder must be:

p = F / A = 250 lb-f / 30 in^2


The pressure generated by the piston at the output cylinders is p = F / A = 775 lb-f / A.


Pascal principle rules that both pressures are equal, so:


250 lb-f / 30 in^2 = 775 lb-f / A => A = 775 lb-f * 30 in^2 / 250 lb-f = 93 in^2


Gvien that each output cylinder are 30in^2 you need 93 / 30 = 3.1 cylinders.


Which means that at least you need 4 cylinders to generate a force at least of 775 lb-f.


Answer: 4
8 0
4 years ago
What machine is a seesaw <br><br> mechanical <br><br> compound<br><br> complex <br><br> simple
guapka [62]
I'm pretty sure its simple! I hope this helps
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3 years ago
Pressure depends upon
kipiarov [429]
C) volume and temperature.
3 0
3 years ago
Which of the following scenarios will cause the current to stop flowing within a current​
ella [17]

Answer:

The switch within the closed circuit is opened and it stops the flow of current in a circuit.

Explanation:

  • Current is defined as a flow of electrons in a system or a circuit.
  • There are two basic things needed for current to flow in a system
  • One is the electro-motive force and the other is the complete path for current to flow.
  • If a switch in a closed circuit gets opened, it restricts the path of current flow.
  • Thus it stops the current to be flowed through the circuit.
7 0
3 years ago
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