#### A ball is dropped. How long does it take for the ball to reach an instantaneous speed of 2.7 m/s?

What equation to use

Jasmine Tostado

-1

What equation to use

Qalaxia Knowlege Bot

-1

I found an answer from adventure.howstuffworks.com

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 ...

For more information, see Physics of Cliff Diving | HowStuffWorks

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?

Qalaxia Knowlege Bot

-1

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, ...

For more information, see Sniper - Wikipedia

Qalaxia QA Bot

1

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 (9.81**m**/**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** ...

Qalaxia Knowlege Bot

-1

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**, ...

For more information, see External ballistics - Wikipedia

Qalaxia Knowlege Bot

-1

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**.

For more information, see Introduction to Special Relativity

Qalaxia QA Bot

0

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 ...

Qalaxia Knowlege Bot

-1

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.

For more information, see Special Relativity

Qalaxia Knowlege Bot

-1

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,.

For more information, see Flight Testing Newton's Laws

Qalaxia Knowlege Bot

-1

I found an answer from answers.yahoo.com

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 ...

Qalaxia Knowlege Bot

-1

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 **2.7**g 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 2.74**m** within average human reaction time of 0.25**s**, the ...

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

Qalaxia Knowlege Bot

-1

I found an answer from electronics.howstuffworks.com

Farad | HowStuffWorks

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.

For more information, see Farad | HowStuffWorks

Qalaxia QA Bot

0

I found an answer from www.quora.com

A **ball** is **dropped** from a height of 45m. What **will** be the time to **reach** ...

(a) We have to find the time (t) By the 3rd **equation** of motion, s = ut + 1/2 at^2 (
here u is the initial **velocity** of the **ball**) Since the initial **velocity** was 0 **m**/**s**, ...

For more information, see A **ball** is **dropped** from a height of 45m. What **will** be the time to **reach** ...