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Physics of Cliff Diving | HowStuffWorks

Physics of Cliff Diving - The physics of cliff diving could save your life. ... When you jump from a cliff, you go into free fall and gravity is the only force ... Because time is a factor in this formula, the longer you fall through space, the faster you go. ... If you increase your height to 50 feet (15 meters), you'll increase the speed of ...

Mahesh Godavarti
3

You have learned two equations in class

v_f = v_i + a \Delta t

\Delta x = v_i \Delta t + \frac{1}{2} a \Delta t^2 .

Note the information given to you.

v_i = 0 (Why? Can you tell?)

a = 9.8 m/s^2 (Why? Do you know?)

v_f = 2.7 m/s (Why? Can you tell?)

What are you being asked to find? \Delta t (Why? Can you tell?)

Given the information and what you are being asked to find, which equation would you use to find the required answer?

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I found an answer from en.wikipedia.org

Sniper - Wikipedia

Due to the extreme distances and travel time involved, even a light cross-breeze of 2.7 m/s (6.0 mph) would have diverted such shots 9.2 m (360 in) off target, ...

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I found an answer from physics.stackexchange.com

newtonian mechanics - How can an object's instantaneous speed ...

So somewhere in between throwing and catching the ball it must ... So this is an example of how there can be a non-zero acceleration (of ... The second funny story was about equation of motion: since v = 0 in the ... due to gravity (9.81m/s^2 ), the acceleration will never be zero. ... Use of / when using cd.

For more information, see newtonian mechanics - How can an object's instantaneous speed ...

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I found an answer from en.wikipedia.org

External ballistics - Wikipedia

External ballistics or exterior ballistics is the part of ballistics that deals with the behavior of a ... Extreme long range projectiles are subject to significant deflections, ..... formula to some other unnamed drop formula's power expansion to reach his ... velocity of 2600 fps (792.5 m/s) using a .30-06 Springfield Cartridge, Ball, ...

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I found an answer from web.stanford.edu

Introduction to Special Relativity

Jul 9, 2008 ... 2.7 But how do we know transverse width is the same for Louise and Ralph? . 27 ..... Velocities for second observer are found using velocity ... 6.3 Momenta and energy for relativistic collisions of two billiard balls. . . . . . 89 ..... as m for space, s for time with an equation ...... (b) For the lab, how long does it take.

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I found an answer from www.quora.com

A ball of mass 8 kg is dropped from a height of 10 m. What is the ...

So after substituting their respective values in the above equation, we get- ... Use the formula: v^2 - u^2 = 2. ... v = 14 m/s. Note that the final velocity of the ball is independent of its mass. ... After how much time will it strike the ground? ... An object of mass 10 kg is dropped from the height of 50 m, what will be its weight when ...

For more information, see A ball of mass 8 kg is dropped from a height of 10 m. What is the ...

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I found an answer from web.stanford.edu

Special Relativity

2.7 The Lorentz Transformation . . . . . . . . . . ... When Do I Use Which Formula? . . . . 39 .... Einstein's theory of relativity has a formidable reputation as ... As far as we can tell, those hy- .... hits a stationary red ball, also of mass m, in an elastic collision. .... 330 m/s. The apparent speed of the sound wave, as measured by Bill , is.

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I found an answer from www.nasa.gov

Flight Testing Newton's Laws

Newton's three laws of motion apply to flight testing an aircraft. However .... Ms. Lauern Holen of the Tehachapi (CA) Unified School District ..... the centripetal force, the rock will retain the velocity it has at the instant the .... Combining Equations 21 and 24 and solving for R we get: ...... and different shapes, i.e., balls , cylinders,.

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You drop a rock into a well, 4 seconds later you hear it splash ...

g is the acceleration of gravity (9.8 m/s). v is the speed of sound (340 m/s). After the rock is released, the time it takes to reach the water is:

For more information, see You drop a rock into a well, 4 seconds later you hear it splash ...

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I found an answer from aero-comlab.stanford.edu

Computational Sports Aerodynamics of a Moving Sphere ...

Jun 30, 2011 ... motion and flow equations in time together using the explicit ... A ping pong ball has a weight, W, of 2.7g and a diameter, ... The typical time it takes for a ping ... of its flight speed, a ping pong ball in free fall in air will reach a terminal velocity ... length of 2.74m within average human reaction time of 0.25s, the ...

For more information, see Computational Sports Aerodynamics of a Moving Sphere ...

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I found an answer from electronics.howstuffworks.com

A 1-farad capacitor can store one coulomb (coo-lomb) of charge at 1 volt. ... To get some perspective on how big a farad is, think about this: ... Obviously, it's impractical to use capacitors to store any significant amount of power unless you do it at a ... of a second, where a battery would take minutes to completely discharge.