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3 years ago

There is one foot in 12 inches.

Physics

1 answer:

Lesechka [4]3 years ago

3 0

Answer:

The answer is C

Explanation:

Just took the quiz

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A ball is launched vertically with an initial speed of y˙0= 50 m/s, and its acceleration is governed by y¨=-g-cDy˙2, where the a

stira [4]

Answer:

Explanation:

Given

acceleration is given by

$a=-g-c_Dv^2$

where $\ddot{y}=a$

$\dot{y}=v$

Also acceleration is given by

$a=v\frac{\mathrm{d} v}{\mathrm{d} s}$

$ds=\frac{v}{a}dv$

$\int ds=\int \frac{v}{-g-0.001v^2}dv$

$\Rightarrow Let -g-0.001v^2=t$

$-0.001\times 2vdv=dt$

$vdv=-\frac{dt}{0.002}$

$at\ v_0=50\ m/s,\ t=-g-0.001(50)^2$

$t=-g-2.5$

at $v=0,\ t=-g$

$\int_{0}^{s}ds=\int_{-g}^{-g-2.5}\frac{-dt}{0.002t}$

$\int_{0}^{s}ds=\int^{-g}_{-g-2.5}\frac{dt}{0.002t}$

$s=\frac{1}{0.002}lnt|_{-g}^{-g-2.5}$

$s=\frac{1}{0.002}\ln (\frac{g+2.5}{g})$

$s=113.608\ m$

when air drag is neglected maximum height reached is

$h=\frac{v_0^2}{2g}$

$h=\frac{50^2}{2\times 9.8}$

$h=127.55\ m$

3 0

3 years ago

E. Study the given diagram and calculate the following:

BartSMP [9]

Answer:

Where is the diagram, dude?

8 0

2 years ago

13. An airplane travels at a constant speed of 800 kilometers per hour (km/h).

kramer

Answer:

The time taken for the airplane to cover the distance is 15 minutes.

Explanation:

Given;

velocity of airplane, u = 800 km/h

distance traveled by the airplane, s = 200 km

The time of this motion is given by;

s = ut + ¹/₂at²

at constant velocity, acceleration, a = 0

s = ut

t = s / u

t = (200 km) / (800 km/h)

t = 0.25 hour = 15 mins

Therefore, the time taken for the airplane to cover the distance is 15 minutes.

5 0

3 years ago

WHAT STRUCTURE DO ALL OF BORON, CARBON, NITROGEN, OXYGEN, AND FLOURINE HAVE IN COMMON

SVEN [57.7K]

CArbon
CaRbOn
Carbon
cArBon

6 0

4 years ago

Which electromagnetic wave transfers the least amount of energy?

Naddika [18.5K]

Answer:

Radio waves have the lowest energies

Explanation:

6 0

3 years ago